Merge remote-tracking branch 'origin/main' into issue-361

.gitattributes

@@ -0,0 +1 @@
+* text=auto eol=lf

.github/workflows/build.yml

@@ -5,7 +5,7 @@ on:
 
 jobs:
   lint:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     strategy:
       matrix:
@@ -28,7 +28,7 @@ jobs:
         run: npm run lint-web
 
   build-api:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     strategy:
       matrix:
@@ -66,7 +66,7 @@ jobs:
           CI: true
 
   build-web:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     strategy:
       matrix:

.github/workflows/release.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   release:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     strategy:
       matrix:
@@ -56,4 +56,4 @@ jobs:
 
       - name: Release
         run: |
-          GITHUB_TOKEN=${{ secrets.GH_TOKEN }} semantic-release
+          GITHUB_TOKEN=${{ secrets.GITHUB_TOKEN }} semantic-release

.npmrc

@@ -0,0 +1 @@
+ignore-scripts=true

.vscode/settings.json

@@ -1,5 +1,3 @@
 {
-  "cSpell.words": [
+  "cSpell.words": ["autoexec", "initialising"]
-    "autoexec"
-  ]
 }

CHANGELOG.md

@@ -1,3 +1,137 @@
+## [0.39.7](https://github.com/sasjs/server/compare/v0.39.6...v0.39.7) (2026-07-14)
+
+
+### Bug Fixes
+
+* **jsonwebtoken:** bumped version to avoid vulnerability ([1473925](https://github.com/sasjs/server/commit/1473925896db0e4472c9ef5ba64955527a1be2de))
+
+## [0.39.6](https://github.com/sasjs/server/compare/v0.39.5...v0.39.6) (2026-07-14)
+
+
+### Bug Fixes
+
+* **api:** isolate drive.spec.ts's files folder from the real drive ([dec5191](https://github.com/sasjs/server/commit/dec51914911c10b66b43ebe95f77b0af63e2d03e))
+* **api:** stop overwriting a failed JS/PY/R session back to completed ([4858245](https://github.com/sasjs/server/commit/4858245372fa19929b6e59c28148f5d004239c9d))
+
+## [0.39.5](https://github.com/sasjs/server/compare/v0.39.4...v0.39.5) (2026-07-14)
+
+
+### Bug Fixes
+
+* **api:** harden mock SAS executable and timeouts for CI ([67fce47](https://github.com/sasjs/server/commit/67fce475a3c53b3c20919902edb45dce809dffb9))
+* **api:** return prompt error response instead of hanging when a SAS session fails ([f84af4a](https://github.com/sasjs/server/commit/f84af4ac0639625fee4508e764f0eed07d7b4e8a))
+* fix code.spec.ts failing on a fresh checkout (CI) ([0af6b63](https://github.com/sasjs/server/commit/0af6b63ffa770bfa2b77505d74778be517f8d631))
+
+## [0.39.4](https://github.com/sasjs/server/compare/v0.39.3...v0.39.4) (2025-12-21)
+
+
+### Bug Fixes
+
+* **deps:** bump dependencies and resolve audit issues ([4f78202](https://github.com/sasjs/server/commit/4f782025dbcdfcbae6ca1fabb42ce1bc385e0162))
+
+## [0.39.3](https://github.com/sasjs/server/compare/v0.39.2...v0.39.3) (2025-11-25)
+
+
+### Bug Fixes
+
+* (deps) bump @sasjs/core to 4.59.7 ([ab96653](https://github.com/sasjs/server/commit/ab966535642d08d4e8e984007b98c8fdffbe30f7))
+* (deps) rerun npm i to sync ([225f381](https://github.com/sasjs/server/commit/225f381bdf8ad5aa2af8d75648df1dd5175e12e0))
+
+## [0.39.2](https://github.com/sasjs/server/compare/v0.39.1...v0.39.2) (2025-09-25)
+
+
+### Bug Fixes
+
+* addressing test fail ([e51b204](https://github.com/sasjs/server/commit/e51b20421adc1598ea267c79b1fb4dbc085f97b9))
+* packages missmatch ([379ea60](https://github.com/sasjs/server/commit/379ea604bcb5686b5299fae6a32f759c45b275ea))
+* type libs ([6d123c3](https://github.com/sasjs/server/commit/6d123c3e23628c1d703eaa13142c77f0da970a55))
+* typescript errors ([631e956](https://github.com/sasjs/server/commit/631e95604b64b1a96f2abade659348618f3b00b2))
+* typescript errors ([198cd79](https://github.com/sasjs/server/commit/198cd79354254511c21ac1acfbf7b6bcfdab2af7))
+
+## [0.39.1](https://github.com/sasjs/server/compare/v0.39.0...v0.39.1) (2025-03-13)
+
+
+### Bug Fixes
+
+* extra bit of sleep for file recognition ([f4768bf](https://github.com/sasjs/server/commit/f4768bffd3dbb2fe243966572ba74002024d96e1)), closes [#381](https://github.com/sasjs/server/issues/381)
+
+# [0.39.0](https://github.com/sasjs/server/compare/v0.38.0...v0.39.0) (2024-10-31)
+
+
+### Bug Fixes
+
+* **api:** fixed condition in processProgram ([48a9a4d](https://github.com/sasjs/server/commit/48a9a4dd0e31f84209635382be4ec4bb2c3a9c0c))
+
+
+### Features
+
+* **api:** added session state endpoint ([6b6546c](https://github.com/sasjs/server/commit/6b6546c7ad0833347f8dc4cdba6ad19132f7aaef))
+
+# [0.38.0](https://github.com/sasjs/server/compare/v0.37.0...v0.38.0) (2024-10-30)
+
+
+### Features
+
+* **api:** enabled query params in stp/trigger endpoint ([5cda9cd](https://github.com/sasjs/server/commit/5cda9cd5d8623b7ea2ecd989d7808f47ec866672))
+
+# [0.37.0](https://github.com/sasjs/server/compare/v0.36.0...v0.37.0) (2024-10-29)
+
+
+### Features
+
+* **stp:** added trigger endpoint ([b0723f1](https://github.com/sasjs/server/commit/b0723f14448d60ffce4f2175cf8a73fc4d4dd0ee))
+
+# [0.36.0](https://github.com/sasjs/server/compare/v0.35.4...v0.36.0) (2024-10-29)
+
+
+### Features
+
+* **code:** added code/trigger API endpoint ([ffcf193](https://github.com/sasjs/server/commit/ffcf193b87d811b166d79af74013776a253b50b0))
+
+## [0.35.4](https://github.com/sasjs/server/compare/v0.35.3...v0.35.4) (2024-01-15)
+
+
+### Bug Fixes
+
+* **api:** fixed env issue in MacOS executable ([73d965d](https://github.com/sasjs/server/commit/73d965daf54b16c0921e4b18d11a1e6f8650884d))
+
+## [0.35.3](https://github.com/sasjs/server/compare/v0.35.2...v0.35.3) (2023-11-07)
+
+
+### Bug Fixes
+
+* enable embedded LFs in JS STP vars ([7e8cbbf](https://github.com/sasjs/server/commit/7e8cbbf377b27a7f5dd9af0bc6605c01f302f5d9))
+
+## [0.35.2](https://github.com/sasjs/server/compare/v0.35.1...v0.35.2) (2023-08-07)
+
+
+### Bug Fixes
+
+* add _debug as optional query param in swagger apis for GET stp/execute ([9586dbb](https://github.com/sasjs/server/commit/9586dbb2d0d6611061c9efdfb84030144f62c2ee))
+
+## [0.35.1](https://github.com/sasjs/server/compare/v0.35.0...v0.35.1) (2023-07-25)
+
+
+### Bug Fixes
+
+* **log-separator:** log separator should always wrap log ([8940f4d](https://github.com/sasjs/server/commit/8940f4dc47abae2036b4fcdeb772c31a0ca07cca))
+
+# [0.35.0](https://github.com/sasjs/server/compare/v0.34.2...v0.35.0) (2023-05-03)
+
+
+### Bug Fixes
+
+* **editor:** fixed log/webout/print tabs ([d2de9dc](https://github.com/sasjs/server/commit/d2de9dc13ef2e980286dd03cca5e22cea443ed0c))
+* **execute:** added atribute indicating stp api ([e78f87f](https://github.com/sasjs/server/commit/e78f87f5c00038ea11261dffb525ac8f1024e40b))
+* **execute:** fixed adding print output ([9aaffce](https://github.com/sasjs/server/commit/9aaffce82051d81bf39adb69942bb321e9795141))
+* **execution:** removed empty webout from response ([6dd2f4f](https://github.com/sasjs/server/commit/6dd2f4f87673336135bc7a6de0d2e143e192c025))
+* **webout:** fixed adding empty webout to response payload ([31df72a](https://github.com/sasjs/server/commit/31df72ad88fe2c771d0ef8445d6db9dd147c40c9))
+
+
+### Features
+
+* **editor:** parse print output in response payload ([eb42683](https://github.com/sasjs/server/commit/eb42683fff701bd5b4d2b68760fe0c3ecad573dd))
+
 ## [0.34.2](https://github.com/sasjs/server/compare/v0.34.1...v0.34.2) (2023-05-01)
 
 

README.md

@@ -158,7 +158,7 @@ CORS=
 WHITELIST=
 
 # HELMET Cross Origin Embedder Policy
-# Sets the Cross-Origin-Embedder-Policy header to require-corp when `true`
+# Sets the Cross-Origin-Embedder-Policy header to require-corp when `true`
 # options: [true|false] default: true
 # Docs: https://helmetjs.github.io/#reference (`crossOriginEmbedderPolicy`)
 HELMET_COEP=

api/docs/diagrams/code-execution-overview.md

@@ -0,0 +1,38 @@
+# Code execution & session diagrams
+
+Mermaid diagrams describing how `@sasjs/server` executes submitted code
+(SAS/JS/PY/R) against pooled "sessions". Written for fast context-loading by
+an AI coding agent: each diagram is self-contained, node/edge labels carry
+the actual file:line references, and prose is kept to the minimum needed to
+disambiguate the diagram.
+
+| File | Covers |
+|---|---|
+| [session-lifecycle.md](session-lifecycle.md) | `SessionState` state machine; how it differs between the SAS runtime and the JS/PY/R runtimes |
+| [sas-execution-handshake.md](sas-execution-handshake.md) | The SYSIN/AUTOEXEC file-swap mechanism a SAS session uses to turn one long-lived `sas` process into a single-use execution slot |
+| [request-execution-flow.md](request-execution-flow.md) | End-to-end flowchart from HTTP request to response, covering session-pool acquisition and both runtime branches (SAS vs JS/PY/R) |
+
+## Core concept
+
+A "session" is not a request-scoped object. It is a pooled, reusable
+execution slot with a filesystem folder (`session.path`) and a state
+(`SessionState`). For the SAS runtime specifically, a session also owns one
+real OS process, spawned at session-*creation* time and consumed by exactly
+one code submission (see `sas-execution-handshake.md`). For JS/PY/R, a
+session is just an ID + folder; the actual interpreter process is spawned
+fresh per request inside `processProgram`.
+
+## Key source files
+
+- `api/src/controllers/internal/Session.ts` — session pool + lifecycle
+  (`SessionController`, `SASSessionController`), `SessionState` transitions.
+- `api/src/controllers/internal/processProgram.ts` — writes the submitted
+  code into the session and drives it to completion/failure, per runtime.
+- `api/src/controllers/internal/Execution.ts` — `ExecutionController`,
+  the entry point controllers call; acquires a session, calls
+  `processProgram`, reads back `log.log`/`webout.txt`/headers, builds the
+  HTTP response (or a `SessionExecutionError` on failure).
+- `api/src/controllers/internal/create{SAS,JS,Python,R}Program.ts` —
+  per-runtime code templating (wraps the user's submitted code with
+  boilerplate: variable injection, `_webout` redirection, etc).
+- `api/src/types/Session.ts` — `SessionState` enum and `Session` interface.

api/docs/diagrams/request-execution-flow.md

@@ -0,0 +1,64 @@
+# Request execution flow (end-to-end)
+
+Full path from an inbound HTTP request to the HTTP response, covering
+session-pool acquisition and the two structurally different runtime
+branches: SAS (reuses a parked long-lived process) vs JS/PY/R (spawns a
+fresh interpreter process per request).
+
+```mermaid
+flowchart TD
+    A["HTTP request<br/>POST /SASjsApi/code/execute<br/>or /SASjsApi/stp/execute"] --> B["Controller<br/>code.ts / stp.ts<br/>try/catch wrapper"]
+    B --> C["ExecutionController.executeProgram<br/>or .executeFile<br/>Execution.ts:58-91"]
+    C --> D{"session already provided?<br/>(e.g. file-upload flow)"}
+    D -- no --> E["getSessionController(runTime).getSession()<br/>Session.ts:59-69"]
+    D -- yes --> F["use provided session"]
+    E --> G{"pending session<br/>available in pool?"}
+    G -- yes --> H["reuse it"]
+    G -- no --> I["createSession()<br/>SAS: spawns a real sas process, see<br/>sas-execution-handshake.md<br/>JS/PY/R: cheap - folder + id only"]
+    H --> J["pre-warm: if pool has fewer<br/>than 3 pending, fire off more<br/>createSession() calls (not awaited)<br/>Session.ts:66"]
+    I --> J
+    F --> K
+    J --> K["session.state = running<br/>Execution.ts:96"]
+    K --> L["write webout.txt (empty),<br/>reqHeaders.txt<br/>Execution.ts:103-107"]
+    L --> M["processProgram(...)<br/>processProgram.ts:16-27"]
+
+    M --> N{"runTime?"}
+
+    N -- SAS --> O["createSASProgram():<br/>wrap user code with _webout<br/>filename, macro vars, autoexec"]
+    O --> P["write code.sas via .bkp + rename<br/>processProgram.ts:48-49"]
+    P --> Q["poll: while session.state !== completed<br/>processProgram.ts:52-58"]
+    Q -- "state becomes completed" --> R["resolve"]
+    Q -- "state becomes failed" --> S["throw Error(session.failureReason)"]
+
+    N -- "JS / PY / R" --> T["createJSProgram / createPythonProgram /<br/>createRProgram: wrap user code similarly"]
+    T --> U["write code file; spawn interpreter<br/>fresh via execFile; pipe stdout/stderr<br/>into a log.log write stream<br/>processProgram.ts:108-134"]
+    U -- "exit 0" --> R
+    U -- "exit non-zero" --> S
+
+    R --> V["read log.log, webout.txt,<br/>stpsrv_header.txt<br/>Execution.ts:128-131"]
+    V --> W["build httpHeaders + result<br/>return ExecuteReturnRaw<br/>Execution.ts:128-151"]
+    W --> X["Controller: res.send(result)<br/>HTTP 200"]
+
+    S --> Y["catch in Execution.ts:109-126:<br/>read whatever log exists,<br/>throw SessionExecutionError(message, log)"]
+    Y --> Z["Controller catch block<br/>rethrow { code: 400, status: 'failure',<br/>message, error, log }"]
+    Z --> AA["res.status(err.code).send(err)<br/>HTTP 400 with complete log"]
+```
+
+## Notes
+
+- **Session pool is per-runtime.** SAS sessions and JS/PY/R sessions live in
+  separate controllers/pools (`process.sasSessionController` vs
+  `process.sessionController`, `Session.ts:239-253`) - a pending SAS session
+  is never handed out for a JS request or vice versa.
+- **The SAS branch and the JS/PY/R branch converge** on the same
+  success/failure signal shape: `session.state` becomes `completed` or
+  `failed` either way, and both paths flow through the same log/webout
+  reading logic in `Execution.ts` afterward. The mechanics of *how* that
+  state gets set differ substantially (see `session-lifecycle.md`).
+- **`includePrintOutput`** (SAS only) additionally appends `output.lst`
+  content to the result when debug mode is on - omitted above for brevity;
+  see `Execution.ts:135-142`.
+- **`triggerProgram`/`triggerCode`** (fire-and-forget variants, not shown)
+  call the same `ExecutionController` methods without awaiting them and
+  immediately return `{ sessionId }`; the client polls
+  `GET /SASjsApi/session/{sessionId}/state` separately.

api/docs/diagrams/sas-execution-handshake.md

@@ -0,0 +1,81 @@
+# SAS session execution handshake
+
+How one long-lived `sas` process is turned into a single-use execution slot
+via a SYSIN file-swap trick. This is the mechanism specific to
+`RunTimeType.SAS`; JS/PY/R sessions spawn a fresh interpreter process per
+request instead (see `request-execution-flow.md`).
+
+```mermaid
+sequenceDiagram
+    participant Client as HTTP client
+    participant Ctrl as Controller<br/>(code.ts / stp.ts)
+    participant Exec as ExecutionController<br/>(Execution.ts)
+    participant Pool as SASSessionController<br/>(Session.ts)
+    participant FS as Filesystem<br/>(session.path)
+    participant SAS as spawned "sas" process
+
+    Note over Pool,SAS: SESSION CREATION - happens ahead of any request,<br/>pool pre-warms up to 3 sessions (Session.ts:59-69)
+    Pool->>FS: createFile(code.sas, "") - empty dummy SYSIN (Session.ts:117-118)
+    Pool->>FS: readFile(sysInitCompiledPath) - compiled system-init<br/>macros, produced by `npm run compileSysInit` (Session.ts:105)
+    Note over Pool: throws if this file doesn't exist yet -<br/>session creation never reaches execFile below
+    Pool->>FS: createFile(autoexec.sas, autoExecContent) (Session.ts:108-114)
+    Pool->>SAS: execFile(sasLoc, -SYSIN code.sas -AUTOEXEC autoexec.sas -LOG log.log ...) (Session.ts:127-147)
+    activate SAS
+    Note right of SAS: process stays active (this box)<br/>from spawn until it finally exits below
+    SAS->>FS: autoexec step 1: delete code.sas, the dummy SYSIN (Session.ts:257-261)
+    Pool->>FS: waitForSession() polls fileExists(code.sas) (Session.ts:175-192)
+    FS-->>Pool: code.sas no longer exists
+    Pool->>Pool: session.state = pending (Session.ts:190)
+    SAS->>SAS: autoexec step 2: busy-wait for code.sas to reappear,<br/>up to 15 minutes (Session.ts:263-274)
+    Note over SAS: process is now idle, parked mid-autoexec,<br/>waiting on the filesystem.<br/>Counts as "pending" in the pool.
+
+    Note over Client,SAS: REQUEST ARRIVES - reuses the parked process above
+    Client->>Ctrl: POST .../execute { code, runTime: sas }
+    Ctrl->>Exec: executeProgram({ program, runTime: SAS, ... })
+    Exec->>Pool: getSession() returns the pending session (Session.ts:59-69)
+    Exec->>Exec: session.state = running (Execution.ts:96)
+    Exec->>FS: createFile(webout.txt, "") and createFile(reqHeaders.txt, ...) (Execution.ts:103-107)
+    Exec->>Pool: processProgram(program, session, ...) (Execution.ts:110-121)
+    Pool->>FS: createSASProgram() wraps user code with macro vars,<br/>_webout filename, autoexec injection (createSASProgram.ts)
+    Pool->>FS: write code.sas.bkp, then rename to code.sas (processProgram.ts:48-49)
+    Note over FS: write-then-rename, not a direct write,<br/>so SAS never reads a partial file
+
+    FS-->>SAS: code.sas exists again
+    SAS->>SAS: autoexec step 2 loop exits, sleeps 0.01s, autoexec ends (Session.ts:267-271)
+    Note over SAS: -SYSIN has pointed at code.sas from the start,<br/>so SAS now executes ITS CONTENT as the main job
+    SAS->>FS: writes log.log, output.lst, webout.txt while running
+
+    Pool->>Pool: processProgram poll loop:<br/>while session.state !== completed (processProgram.ts:52-58)
+
+    alt program reaches EOF normally
+        SAS->>SAS: exits with code 0
+        SAS-->>Pool: execFilePromise resolves - .then() (Session.ts:148-152)
+        Pool->>Pool: session.state = completed
+        Pool-->>Exec: processProgram() resolves
+    else program aborts (fatal error, license failure, hard STOP)
+        SAS->>SAS: exits with non-zero code
+        SAS-->>Pool: execFilePromise rejects - .catch() (Session.ts:153-163)
+        Pool->>Pool: session.state = failed<br/>session.failureReason = err.toString()
+        Pool-->>Exec: processProgram() throws (processProgram.ts:53-55)
+    end
+    deactivate SAS
+
+    Exec->>FS: read log.log, webout.txt, stpsrv_header.txt (Execution.ts:123, 128-131)
+    Exec-->>Ctrl: { httpHeaders, result }<br/>or throws SessionExecutionError{ message, log } (Execution.ts:109-126)
+    Ctrl-->>Client: 200 + result<br/>or 400 { status, message, error, log }
+```
+
+## Why this design
+
+- SAS has meaningful startup cost (loading the engine, running system init
+  macros). Spawning a fresh `sas` process per request would pay that cost
+  every time. Instead, a process is spawned once and parked, ready to run
+  exactly one job the moment code shows up at a path it's already watching.
+- The pool (`SessionController.getSession`, `Session.ts:59-69`) keeps up to
+  3 such parked processes ready, so most requests get an instant handoff
+  instead of waiting through the ~15-minute autoexec spin-wait or a cold
+  start.
+- A session is single-use: once its process consumes the real SYSIN content
+  and exits (success or failure), that process is gone. The session object
+  itself is deleted later by `scheduleSessionDestroy` (`Session.ts:204-236`),
+  not reused for a second job.

api/docs/diagrams/session-lifecycle.md

@@ -0,0 +1,70 @@
+# Session lifecycle (`SessionState`)
+
+Enum defined in `api/src/types/Session.ts`. A `Session` is `{ id, state,
+path, creationTimeStamp, deathTimeStamp, expiresAfterMins?, failureReason? }`.
+Sessions live in an in-memory array on a per-runtime singleton controller
+(`process.sasSessionController` for SAS, `process.sessionController` shared
+by JS/PY/R — see `getSessionController()` in `Session.ts:239-253`).
+
+```mermaid
+stateDiagram-v2
+    [*] --> initialising: SAS runtime<br/>SASSessionController.createSession()<br/>Session.ts:77-95
+    [*] --> pending: JS/PY/R runtime, no process yet<br/>SessionController.createSession()<br/>Session.ts:30-57
+
+    initialising --> pending: dummy SYSIN file deleted<br/>by SAS's autoexec<br/>waitForSession(), Session.ts:175-192
+    initialising --> failed: spawned SAS process exits<br/>before handshake completes<br/>Session.ts:153-163, 184-188
+
+    pending --> running: session picked for a request<br/>executeProgram(), Execution.ts:94-96
+
+    running --> completed: process exits 0<br/>SAS: Session.ts:148-152 (original process)<br/>JS/PY/R: processProgram.ts:116-120 (fresh process)
+    running --> failed: process exits non-zero<br/>SAS: Session.ts:153-163<br/>JS/PY/R: processProgram.ts:121-131<br/>failureReason = err.toString()
+
+    completed --> [*]: deleteSession()<br/>scheduleSessionDestroy(), Session.ts:194-236
+    failed --> [*]: deleteSession()<br/>scheduleSessionDestroy()
+
+    note right of initialising
+        SAS only. The real sas
+        executable is already
+        running, spin-waiting
+        inside its AUTOEXEC for
+        real code to arrive.
+        See sas-execution-handshake.md
+    end note
+
+    note right of pending
+        Session sits in the pool,
+        reusable. Pre-warmed up to
+        3 pending sessions per
+        runtime (getSession(),
+        Session.ts:59-69)
+    end note
+
+    note right of running
+        SAS: no new process spawned
+        here, request just feeds
+        code to the already-running
+        process.
+        JS/PY/R: a brand new
+        interpreter process is
+        spawned right now.
+    end note
+```
+
+## Consumers of `state`
+
+| Reader | Location | Watches for |
+|---|---|---|
+| `waitForSession` | `Session.ts:175-192` | `failed` (breaks early) or the dummy SYSIN file disappearing (implies session survived init) |
+| `processProgram` (SAS branch poll loop) | `processProgram.ts:52-58` | `completed` (success exit) or `failed` (throws, carrying `session.failureReason`) |
+| `scheduleSessionDestroy` | `Session.ts:204-236` | `running` (extends death timer instead of destroying) |
+
+## Asymmetry between runtimes
+
+- **SAS**: one OS process per session, spawned once at `createSession()`
+  time and reused for exactly one job (see `sas-execution-handshake.md`).
+  `running`/`completed`/`failed` are all driven by that *same* process's
+  eventual exit.
+- **JS/PY/R**: a session is cheap (folder + id, no process). The interpreter
+  process is spawned fresh, per request, inside `processProgram.ts:115` and
+  its exit drives `completed`/`failed` directly in the same function - there
+  is no separate poll loop for these runtimes.

api/package.json

@@ -6,11 +6,9 @@
   "scripts": {
     "initial": "npm run swagger && npm run compileSysInit && npm run copySASjsCore && npm run downloadMacros",
     "prestart": "npm run initial",
-    "prebuild": "npm run initial",
     "start": "NODE_ENV=development nodemon ./src/server.ts",
     "start:prod": "node ./build/src/server.js",
-    "build": "rimraf build && tsc",
+    "build": "npm run initial && rimraf build && tsc && npm run copy:files",
-    "postbuild": "npm run copy:files",
     "swagger": "tsoa spec",
     "prepare": "[ -d .git ] && git config core.hooksPath ./.git-hooks || true",
     "test": "mkdir -p tmp && mkdir -p ../web/build && jest --silent --coverage",
@@ -18,10 +16,10 @@
     "lint": "npx prettier --check \"src/**/*.{ts,tsx,js,jsx,html,css,sass,less,yml,md,graphql}\"",
     "exe": "npm run build && pkg .",
     "copy:files": "npm run public:copy && npm run sasjsbuild:copy && npm run sas:copy && npm run web:copy",
-    "public:copy": "cp -r ./public/ ./build/public/",
+    "public:copy": "cpr ./public/ ./build/public/",
-    "sasjsbuild:copy": "cp -r ./sasjsbuild/ ./build/sasjsbuild/",
+    "sasjsbuild:copy": "cpr ./sasjsbuild/ ./build/sasjsbuild/",
-    "sas:copy": "cp -r ./sas/ ./build/sas/",
+    "sas:copy": "cpr ./sas/ ./build/sas/",
-    "web:copy": "rimraf web && mkdir web && cp -r ../web/build/ ./web/build/",
+    "web:copy": "rimraf web && mkdir web && cpr ../web/build/ ./web/build/",
     "compileSysInit": "ts-node ./scripts/compileSysInit.ts",
     "copySASjsCore": "ts-node ./scripts/copySASjsCore.ts",
     "downloadMacros": "ts-node ./scripts/downloadMacros.ts"
@@ -48,25 +46,25 @@
   },
   "author": "4GL Ltd",
   "dependencies": {
-    "@sasjs/core": "^4.40.1",
+    "@sasjs/core": "^4.59.10",
-    "@sasjs/utils": "3.2.0",
+    "@sasjs/utils": "^3.5.6",
     "bcryptjs": "^2.4.3",
-    "connect-mongo": "^4.6.0",
+    "connect-mongo": "^5.1.0",
-    "cookie-parser": "^1.4.6",
+    "cookie-parser": "^1.4.7",
     "cors": "^2.8.5",
-    "express": "^4.17.1",
+    "express": "^4.21.2",
-    "express-session": "^1.17.2",
+    "express-session": "^1.18.2",
     "helmet": "^5.0.2",
     "joi": "^17.4.2",
-    "jsonwebtoken": "^8.5.1",
+    "jsonwebtoken": "^9.0.3",
     "ldapjs": "2.3.3",
-    "mongoose": "^6.0.12",
+    "mongoose": "^6.13.8",
-    "morgan": "^1.10.0",
+    "morgan": "^1.10.1",
     "multer": "^1.4.5-lts.1",
     "rate-limiter-flexible": "2.4.1",
     "rotating-file-stream": "^3.0.4",
     "swagger-ui-express": "4.3.0",
-    "unzipper": "^0.10.11",
+    "unzipper": "^0.12.3",
     "url": "^0.10.3"
   },
   "devDependencies": {
@@ -76,32 +74,33 @@
     "@types/cors": "^2.8.12",
     "@types/express": "^4.17.12",
     "@types/express-session": "^1.17.4",
-    "@types/jest": "^26.0.24",
+    "@types/jest": "^29.5.0",
     "@types/jsonwebtoken": "^8.5.5",
     "@types/ldapjs": "^2.2.4",
     "@types/morgan": "^1.9.3",
     "@types/multer": "^1.4.7",
-    "@types/node": "^15.12.2",
+    "@types/node": "^20.0.0",
     "@types/supertest": "^2.0.11",
     "@types/swagger-ui-express": "^4.1.3",
     "@types/unzipper": "^0.10.5",
     "adm-zip": "^0.5.9",
-    "axios": "0.27.2",
+    "axios": "1.12.2",
+    "cpr": "^3.0.1",
     "csrf": "^3.1.0",
-    "dotenv": "^10.0.0",
+    "dotenv": "^16.0.1",
     "http-headers-validation": "^0.0.1",
-    "jest": "^27.0.6",
+    "jest": "^29.7.0",
     "mongodb-memory-server": "8.11.4",
     "nodejs-file-downloader": "4.10.2",
-    "nodemon": "^2.0.7",
+    "nodemon": "^3.0.0",
     "pkg": "5.6.0",
-    "prettier": "^2.3.1",
+    "prettier": "^3.0.3",
     "rimraf": "^3.0.2",
     "supertest": "^6.1.3",
-    "ts-jest": "^27.0.3",
+    "ts-jest": "^29.1.0",
     "ts-node": "^10.0.0",
     "tsoa": "3.14.1",
-    "typescript": "^4.3.2"
+    "typescript": "^5.0.0"
   },
   "nodemonConfig": {
     "ignore": [

api/public/swagger.yaml

@@ -97,17 +97,47 @@ components:
             properties:
                 code:
                     type: string
-                    description: 'Code of program'
+                    description: 'The code to be executed'
-                    example: '* Code HERE;'
+                    example: '* Your Code HERE;'
                 runTime:
                     $ref: '#/components/schemas/RunTimeType'
-                    description: 'runtime for program'
+                    description: 'The runtime for the code - eg SAS, JS, PY or R'
                     example: js
             required:
                 - code
                 - runTime
             type: object
             additionalProperties: false
+        TriggerCodeResponse:
+            properties:
+                sessionId:
+                    type: string
+                    description: "`sessionId` is the ID of the session and the name of the temporary folder\nused to store code outputs.<br><br>\nFor SAS, this would be the location of the SASWORK folder.<br><br>\n`sessionId` can be used to poll session state using the\nGET /SASjsApi/session/{sessionId}/state endpoint."
+                    example: 20241028074744-54132-1730101664824
+            required:
+                - sessionId
+            type: object
+            additionalProperties: false
+        TriggerCodePayload:
+            properties:
+                code:
+                    type: string
+                    description: 'The code to be executed'
+                    example: '* Your Code HERE;'
+                runTime:
+                    $ref: '#/components/schemas/RunTimeType'
+                    description: 'The runtime for the code - eg SAS, JS, PY or R'
+                    example: sas
+                expiresAfterMins:
+                    type: number
+                    format: double
+                    description: "Amount of minutes after the completion of the job when the session must be\ndestroyed."
+                    example: 15
+            required:
+                - code
+                - runTime
+            type: object
+            additionalProperties: false
         MemberType.folder:
             enum:
                 - folder
@@ -559,6 +589,14 @@ components:
                 - id
             type: object
             additionalProperties: false
+        SessionState:
+            enum:
+                - initialising
+                - pending
+                - running
+                - completed
+                - failed
+            type: string
         ExecutePostRequestPayload:
             properties:
                 _program:
@@ -567,6 +605,16 @@ components:
                     example: /Public/somefolder/some.file
             type: object
             additionalProperties: false
+        TriggerProgramResponse:
+            properties:
+                sessionId:
+                    type: string
+                    description: "`sessionId` is the ID of the session and the name of the temporary folder\nused to store program outputs.<br><br>\nFor SAS, this would be the location of the SASWORK folder.<br><br>\n`sessionId` can be used to poll session state using the\nGET /SASjsApi/session/{sessionId}/state endpoint."
+                    example: 20241028074744-54132-1730101664824
+            required:
+                - sessionId
+            type: object
+            additionalProperties: false
         LoginPayload:
             properties:
                 username:
@@ -796,7 +844,7 @@ paths:
                                     - {type: string}
                                     - {type: string, format: byte}
             description: 'Execute Code on the Specified Runtime'
-            summary: 'Run Code and Return Webout Content and Log'
+            summary: "Run Code and Return Webout Content, Log and Print output\nThe order of returned parts of the payload is:\n1. Webout (if present)\n2. Logs UUID (used as separator)\n3. Log\n4. Logs UUID (used as separator)\n5. Print (if present and if the runtime is SAS)\nPlease see"
             tags:
                 - Code
             security:
@@ -809,6 +857,30 @@ paths:
                     application/json:
                         schema:
                             $ref: '#/components/schemas/ExecuteCodePayload'
+    /SASjsApi/code/trigger:
+        post:
+            operationId: TriggerCode
+            responses:
+                '200':
+                    description: Ok
+                    content:
+                        application/json:
+                            schema:
+                                $ref: '#/components/schemas/TriggerCodeResponse'
+            description: 'Trigger Code on the Specified Runtime'
+            summary: 'Triggers code and returns SessionId immediately - does not wait for job completion'
+            tags:
+                - Code
+            security:
+                -
+                    bearerAuth: []
+            parameters: []
+            requestBody:
+                required: true
+                content:
+                    application/json:
+                        schema:
+                            $ref: '#/components/schemas/TriggerCodePayload'
     /SASjsApi/drive/deploy:
         post:
             operationId: Deploy
@@ -1764,6 +1836,30 @@ paths:
                 -
                     bearerAuth: []
             parameters: []
+    '/SASjsApi/session/{sessionId}/state':
+        get:
+            operationId: SessionState
+            responses:
+                '200':
+                    description: Ok
+                    content:
+                        application/json:
+                            schema:
+                                $ref: '#/components/schemas/SessionState'
+            description: "The polling endpoint is currently implemented for single-server deployments only.<br>\nLoad balanced / grid topologies will be supported in a future release.<br>\nIf your site requires this, please reach out to SASjs Support."
+            summary: 'Get session state (initialising, pending, running, completed, failed).'
+            tags:
+                - Session
+            security:
+                -
+                    bearerAuth: []
+            parameters:
+                -
+                    in: path
+                    name: sessionId
+                    required: true
+                    schema:
+                        type: string
     /SASjsApi/stp/execute:
         get:
             operationId: ExecuteGetRequest
@@ -1776,7 +1872,7 @@ paths:
                                 anyOf:
                                     - {type: string}
                                     - {type: string, format: byte}
-            description: "Trigger a Stored Program using the _program URL parameter.\n\nAccepts URL parameters and file uploads.  For more details, see docs:\n\nhttps://server.sasjs.io/storedprograms"
+            description: "Trigger a Stored Program using the _program URL parameter.\n\nAccepts additional URL parameters (converted to session variables)\nand file uploads.  For more details, see docs:\n\nhttps://server.sasjs.io/storedprograms"
             summary: 'Execute a Stored Program, returns _webout and (optionally) log.'
             tags:
                 - STP
@@ -1785,13 +1881,22 @@ paths:
                     bearerAuth: []
             parameters:
                 -
-                    description: 'Location of code in SASjs Drive'
+                    description: 'Location of Stored Program in SASjs Drive.'
                     in: query
                     name: _program
                     required: true
                     schema:
                         type: string
                     example: /Projects/myApp/some/program
+                -
+                    description: 'Optional query param for setting debug mode (returns the session log in the response body).'
+                    in: query
+                    name: _debug
+                    required: false
+                    schema:
+                        format: double
+                        type: number
+                    example: 131
         post:
             operationId: ExecutePostRequest
             responses:
@@ -1825,6 +1930,50 @@ paths:
                     application/json:
                         schema:
                             $ref: '#/components/schemas/ExecutePostRequestPayload'
+    /SASjsApi/stp/trigger:
+        post:
+            operationId: TriggerProgram
+            responses:
+                '200':
+                    description: Ok
+                    content:
+                        application/json:
+                            schema:
+                                $ref: '#/components/schemas/TriggerProgramResponse'
+            description: 'Trigger Program on the Specified Runtime.'
+            summary: 'Triggers program and returns SessionId immediately - does not wait for program completion.'
+            tags:
+                - STP
+            security:
+                -
+                    bearerAuth: []
+            parameters:
+                -
+                    description: 'Location of code in SASjs Drive.'
+                    in: query
+                    name: _program
+                    required: true
+                    schema:
+                        type: string
+                    example: /Projects/myApp/some/program
+                -
+                    description: 'Optional query param for setting debug mode.'
+                    in: query
+                    name: _debug
+                    required: false
+                    schema:
+                        format: double
+                        type: number
+                    example: 131
+                -
+                    description: 'Optional query param for setting amount of minutes after the completion of the program when the session must be destroyed.'
+                    in: query
+                    name: expiresAfterMins
+                    required: false
+                    schema:
+                        format: double
+                        type: number
+                    example: 15
     /:
         get:
             operationId: Home

api/src/controllers/auth.ts

@@ -234,9 +234,10 @@ const verifyAuthCode = async (
     jwt.verify(code, process.secrets.AUTH_CODE_SECRET, (err, data) => {
       if (err) return resolve(undefined)
 
+      const payload = data as InfoJWT
       const clientInfo: InfoJWT = {
-        clientId: data?.clientId,
+        clientId: payload?.clientId,
-        userId: data?.userId
+        userId: payload?.userId
       }
       if (clientInfo.clientId === clientId) {
         return resolve(clientInfo)

api/src/controllers/code.ts

@@ -1,34 +1,71 @@
 import express from 'express'
 import { Request, Security, Route, Tags, Post, Body } from 'tsoa'
-import { ExecutionController } from './internal'
+import { ExecutionController, getSessionController } from './internal'
 import {
   getPreProgramVariables,
   getUserAutoExec,
   ModeType,
-  parseLogToArray,
   RunTimeType
 } from '../utils'
 
 interface ExecuteCodePayload {
   /**
-   * Code of program
+   * The code to be executed
-   * @example "* Code HERE;"
+   * @example "* Your Code HERE;"
    */
   code: string
   /**
-   * runtime for program
+   * The runtime for the code - eg SAS, JS, PY or R
    * @example "js"
    */
   runTime: RunTimeType
 }
 
+interface TriggerCodePayload {
+  /**
+   * The code to be executed
+   * @example "* Your Code HERE;"
+   */
+  code: string
+  /**
+   * The runtime for the code - eg SAS, JS, PY or R
+   * @example "sas"
+   */
+  runTime: RunTimeType
+  /**
+   * Amount of minutes after the completion of the job when the session must be
+   * destroyed.
+   * @example 15
+   */
+  expiresAfterMins?: number
+}
+
+interface TriggerCodeResponse {
+  /**
+   * `sessionId` is the ID of the session and the name of the temporary folder
+   * used to store code outputs.<br><br>
+   * For SAS, this would be the location of the SASWORK folder.<br><br>
+   * `sessionId` can be used to poll session state using the
+   * GET /SASjsApi/session/{sessionId}/state endpoint.
+   * @example "20241028074744-54132-1730101664824"
+   */
+  sessionId: string
+}
+
 @Security('bearerAuth')
 @Route('SASjsApi/code')
 @Tags('Code')
 export class CodeController {
   /**
    * Execute Code on the Specified Runtime
-   * @summary Run Code and Return Webout Content and Log
+   * @summary Run Code and Return Webout Content, Log and Print output
+   * The order of returned parts of the payload is:
+   * 1. Webout (if present)
+   * 2. Logs UUID (used as separator)
+   * 3. Log
+   * 4. Logs UUID (used as separator)
+   * 5. Print (if present and if the runtime is SAS)
+   * Please see @sasjs/server/api/src/controllers/internal/Execution.ts for more information
    */
   @Post('/execute')
   public async executeCode(
@@ -37,6 +74,18 @@ export class CodeController {
   ): Promise<string | Buffer> {
     return executeCode(request, body)
   }
+
+  /**
+   * Trigger Code on the Specified Runtime
+   * @summary Triggers code and returns SessionId immediately - does not wait for job completion
+   */
+  @Post('/trigger')
+  public async triggerCode(
+    @Request() request: express.Request,
+    @Body() body: TriggerCodePayload
+  ): Promise<TriggerCodeResponse> {
+    return triggerCode(request, body)
+  }
 }
 
 const executeCode = async (
@@ -55,10 +104,58 @@ const executeCode = async (
       preProgramVariables: getPreProgramVariables(req),
       vars: { ...req.query, _debug: 131 },
       otherArgs: { userAutoExec },
-      runTime: runTime
+      runTime: runTime,
+      includePrintOutput: true
     })
 
     return result
+  } catch (err: any) {
+    throw {
+      code: 400,
+      status: 'failure',
+      message: 'Job execution failed.',
+      error: typeof err === 'object' ? err.toString() : err,
+      log: err?.log
+    }
+  }
+}
+
+const triggerCode = async (
+  req: express.Request,
+  { code, runTime, expiresAfterMins }: TriggerCodePayload
+): Promise<TriggerCodeResponse> => {
+  const { user } = req
+  const userAutoExec =
+    process.env.MODE === ModeType.Server
+      ? user?.autoExec
+      : await getUserAutoExec()
+
+  // get session controller based on runTime
+  const sessionController = getSessionController(runTime)
+
+  // get session
+  const session = await sessionController.getSession()
+
+  // add expiresAfterMins to session if provided
+  if (expiresAfterMins) {
+    // expiresAfterMins.used is set initially to false
+    session.expiresAfterMins = { mins: expiresAfterMins, used: false }
+  }
+
+  try {
+    // call executeProgram method of ExecutionController without awaiting
+    new ExecutionController().executeProgram({
+      program: code,
+      preProgramVariables: getPreProgramVariables(req),
+      vars: { ...req.query, _debug: 131 },
+      otherArgs: { userAutoExec },
+      runTime: runTime,
+      includePrintOutput: true,
+      session // session is provided
+    })
+
+    // return session id
+    return { sessionId: session.id }
   } catch (err: any) {
     throw {
       code: 400,

api/src/controllers/internal/Execution.ts

@@ -2,7 +2,7 @@ import path from 'path'
 import fs from 'fs'
 import { getSessionController, processProgram } from './'
 import { readFile, fileExists, createFile, readFileBinary } from '@sasjs/utils'
-import { PreProgramVars, Session, TreeNode } from '../../types'
+import { PreProgramVars, Session, TreeNode, SessionState } from '../../types'
 import {
   extractHeaders,
   getFilesFolder,
@@ -15,6 +15,24 @@ export interface ExecutionVars {
   [key: string]: string | number | undefined
 }
 
+// Thrown when the session itself fails (e.g. SAS exits abnormally via
+// %abort;). Carries the complete log - by the time this is thrown, the
+// session's process has already exited, so the log file it wrote is final,
+// not a partial/truncated snapshot.
+export class SessionExecutionError extends Error {
+  constructor(
+    message: string,
+    public log?: string
+  ) {
+    super(message)
+
+    // required for `instanceof` to work when compiling to ES5, since the
+    // default __extends helper does not preserve the prototype chain for
+    // classes extending built-ins like Error
+    Object.setPrototypeOf(this, SessionExecutionError.prototype)
+  }
+}
+
 export interface ExecuteReturnRaw {
   httpHeaders: HTTPHeaders
   result: string | Buffer
@@ -33,6 +51,7 @@ interface ExecuteFileParams {
 
 interface ExecuteProgramParams extends Omit<ExecuteFileParams, 'programPath'> {
   program: string
+  includePrintOutput?: boolean
 }
 
 export class ExecutionController {
@@ -67,18 +86,17 @@ export class ExecutionController {
     otherArgs,
     session: sessionByFileUpload,
     runTime,
-    forceStringResult
+    forceStringResult,
+    includePrintOutput
   }: ExecuteProgramParams): Promise<ExecuteReturnRaw> {
     const sessionController = getSessionController(runTime)
 
     const session =
       sessionByFileUpload ?? (await sessionController.getSession())
-    session.inUse = true
+    session.state = SessionState.running
-    session.consumed = true
 
     const logPath = path.join(session.path, 'log.log')
     const headersPath = path.join(session.path, 'stpsrv_header.txt')
-
     const weboutPath = path.join(session.path, 'webout.txt')
     const tokenFile = path.join(session.path, 'reqHeaders.txt')
 
@@ -88,6 +106,7 @@ export class ExecutionController {
       preProgramVariables?.httpHeaders.join('\n') ?? ''
     )
 
+    try {
       await processProgram(
         program,
         preProgramVariables,
@@ -100,6 +119,11 @@ export class ExecutionController {
         logPath,
         otherArgs
       )
+    } catch (err: any) {
+      const log = (await fileExists(logPath)) ? await readFile(logPath) : ''
+
+      throw new SessionExecutionError(err.message, log)
+    }
 
     const log = (await fileExists(logPath)) ? await readFile(logPath) : ''
     const headersContent = (await fileExists(headersPath))
@@ -120,13 +144,41 @@ export class ExecutionController {
       : ''
 
     // it should be deleted by scheduleSessionDestroy
-    session.inUse = false
+    //
+    // Guarded: for JS/PY/R, processProgram sets state to `failed` itself
+    // (without throwing) when the interpreter process exits non-zero - if
+    // we unconditionally set `completed` here we'd silently overwrite that,
+    // and anything downstream inspecting session.state (e.g.
+    // scheduleSessionDestroy's expiresAfterMins branch in Session.ts) would
+    // see a crashed session mis-reported as successful.
+    if ((session.state as SessionState) !== SessionState.failed) {
+      session.state = SessionState.completed
+    }
+
+    const resultParts = []
+
+    // INFO: webout can be a Buffer, that is why it's length should be checked to determine if it is empty
+    if (webout && webout.length !== 0) resultParts.push(webout)
+
+    // INFO: log separator wraps the log from the beginning and the end
+    resultParts.push(process.logsUUID)
+    resultParts.push(log)
+    resultParts.push(process.logsUUID)
+
+    if (includePrintOutput && runTime === RunTimeType.SAS) {
+      const printOutputPath = path.join(session.path, 'output.lst')
+      const printOutput = (await fileExists(printOutputPath))
+        ? await readFile(printOutputPath)
+        : ''
+
+      if (printOutput) resultParts.push(printOutput)
+    }
 
     return {
       httpHeaders,
       result:
-        isDebugOn(vars) || session.crashed
+        isDebugOn(vars) || session.failureReason
-          ? `${webout}\n${process.logsUUID}\n${log}`
+          ? resultParts.join(`\n`)
           : webout
     }
   }

api/src/controllers/internal/FileUploadController.ts

@@ -2,11 +2,8 @@ import { Request, RequestHandler } from 'express'
 import multer from 'multer'
 import { uuidv4 } from '@sasjs/utils'
 import { getSessionController } from '.'
-import {
+import { executeProgramRawValidation, getRunTimeAndFilePath } from '../../utils'
-  executeProgramRawValidation,
+import { SessionState } from '../../types'
-  getRunTimeAndFilePath,
-  RunTimeType
-} from '../../utils'
 
 export class FileUploadController {
   private storage = multer.diskStorage({
@@ -56,9 +53,8 @@ export class FileUploadController {
     }
 
     const session = await sessionController.getSession()
-    // marking consumed true, so that it's not available
+    // change session state to 'running', so that it's not available for any other request
-    // as readySession for any other request
+    session.state = SessionState.running
-    session.consumed = true
 
     req.sasjsSession = session
 

api/src/controllers/internal/Session.ts

@@ -1,5 +1,5 @@
 import path from 'path'
-import { Session } from '../../types'
+import { Session, SessionState } from '../../types'
 import { promisify } from 'util'
 import { execFile } from 'child_process'
 import {
@@ -14,8 +14,7 @@ import {
   createFile,
   fileExists,
   generateTimestamp,
-  readFile,
+  readFile
-  isWindows
 } from '@sasjs/utils'
 
 const execFilePromise = promisify(execFile)
@@ -24,7 +23,9 @@ export class SessionController {
   protected sessions: Session[] = []
 
   protected getReadySessions = (): Session[] =>
-    this.sessions.filter((sess: Session) => sess.ready && !sess.consumed)
+    this.sessions.filter(
+      (session: Session) => session.state === SessionState.pending
+    )
 
   protected async createSession(): Promise<Session> {
     const sessionId = generateUniqueFileName(generateTimestamp())
@@ -40,19 +41,18 @@ export class SessionController {
 
     const session: Session = {
       id: sessionId,
-      ready: true,
+      state: SessionState.pending,
-      inUse: true,
-      consumed: false,
-      completed: false,
       creationTimeStamp,
       deathTimeStamp,
       path: sessionFolder
     }
 
     const headersPath = path.join(session.path, 'stpsrv_header.txt')
+
     await createFile(headersPath, 'content-type: text/html; charset=utf-8')
 
     this.sessions.push(session)
+
     return session
   }
 
@@ -67,6 +67,10 @@ export class SessionController {
 
     return session
   }
+
+  public getSessionById(id: string) {
+    return this.sessions.find((session) => session.id === id)
+  }
 }
 
 export class SASSessionController extends SessionController {
@@ -84,10 +88,7 @@ export class SASSessionController extends SessionController {
 
     const session: Session = {
       id: sessionId,
-      ready: false,
+      state: SessionState.initialising,
-      inUse: false,
-      consumed: false,
-      completed: false,
       creationTimeStamp,
       deathTimeStamp,
       path: sessionFolder
@@ -145,13 +146,20 @@ ${autoExecContent}`
       process.sasLoc!.endsWith('sas.exe') ? session.path : ''
     ])
       .then(() => {
-        session.completed = true
+        session.state = SessionState.completed
+
         process.logger.info('session completed', session)
       })
       .catch((err) => {
-        session.completed = true
+        session.state = SessionState.failed
-        session.crashed = err.toString()
+
-        process.logger.error('session crashed', session.id, session.crashed)
+        session.failureReason = err.toString()
+
+        process.logger.error(
+          'session crashed',
+          session.id,
+          session.failureReason
+        )
       })
 
     // we have a triggered session - add to array
@@ -168,15 +176,19 @@ ${autoExecContent}`
     const codeFilePath = path.join(session.path, 'code.sas')
 
     // TODO: don't wait forever
-    while ((await fileExists(codeFilePath)) && !session.crashed) {}
+    while (
+      (await fileExists(codeFilePath)) &&
+      session.state !== SessionState.failed
+    ) {}
 
-    if (session.crashed)
+    if (session.state === SessionState.failed) {
       process.logger.error(
         'session crashed! while waiting to be ready',
-        session.crashed
+        session.failureReason
       )
-
+    } else {
-    session.ready = true
+      session.state = SessionState.pending
+    }
   }
 
   private async deleteSession(session: Session) {
@@ -190,17 +202,37 @@ ${autoExecContent}`
   }
 
   private scheduleSessionDestroy(session: Session) {
-    setTimeout(async () => {
+    setTimeout(
-      if (session.inUse) {
+      async () => {
+        if (session.state === SessionState.running) {
           // adding 10 more minutes
-        const newDeathTimeStamp = parseInt(session.deathTimeStamp) + 10 * 1000
+          const newDeathTimeStamp =
+            parseInt(session.deathTimeStamp) + 10 * 60 * 1000
           session.deathTimeStamp = newDeathTimeStamp.toString()
 
+          this.scheduleSessionDestroy(session)
+        } else {
+          const { expiresAfterMins } = session
+
+          // delay session destroy if expiresAfterMins present
+          if (expiresAfterMins && session.state !== SessionState.completed) {
+            // calculate session death time using expiresAfterMins
+            const newDeathTimeStamp =
+              parseInt(session.deathTimeStamp) +
+              expiresAfterMins.mins * 60 * 1000
+            session.deathTimeStamp = newDeathTimeStamp.toString()
+
+            // set expiresAfterMins to true to avoid using it again
+            session.expiresAfterMins!.used = true
+
             this.scheduleSessionDestroy(session)
           } else {
             await this.deleteSession(session)
           }
-    }, parseInt(session.deathTimeStamp) - new Date().getTime() - 100)
+        }
+      },
+      parseInt(session.deathTimeStamp) - new Date().getTime() - 100
+    )
   }
 }
 
@@ -228,9 +260,16 @@ data _null_;
   rc=filename(fname,getoption('SYSIN') );
   if rc = 0 and fexist(fname) then rc=fdelete(fname);
   rc=filename(fname);
-  /* now wait for the real SYSIN */
+  /* now wait for the real SYSIN (location of code.sas) */
-  slept=0;
+  slept=0;fname='';
-  do until ( fileexist(getoption('SYSIN')) or slept>(60*15) );
+  do until (slept>(60*15));
+    rc=filename(fname,getoption('SYSIN'));
+    if rc = 0 and fexist(fname) then do;
+      putlog fname=;
+      rc=filename(fname);
+      rc=sleep(0.01,1); /* wait just a little more */
+      stop;
+    end;
     slept=slept+sleep(0.01,1);
   end;
   stop;

api/src/controllers/internal/createJSProgram.ts

@@ -15,7 +15,7 @@ export const createJSProgram = async (
 ) => {
   const varStatments = Object.keys(vars).reduce(
     (computed: string, key: string) =>
-      `${computed}const ${key} = '${vars[key]}';\n`,
+      `${computed}const ${key} = \`${vars[key]}\`;\n`,
     ''
   )
 

api/src/controllers/internal/processProgram.ts

@@ -3,7 +3,7 @@ import { WriteStream, createWriteStream } from 'fs'
 import { execFile } from 'child_process'
 import { once } from 'stream'
 import { createFile, moveFile } from '@sasjs/utils'
-import { PreProgramVars, Session } from '../../types'
+import { PreProgramVars, Session, SessionState } from '../../types'
 import { RunTimeType } from '../../utils'
 import {
   ExecutionVars,
@@ -49,7 +49,11 @@ export const processProgram = async (
     await moveFile(codePath + '.bkp', codePath)
 
     // we now need to poll the session status
-    while (!session.completed) {
+    while (session.state !== SessionState.completed) {
+      if (session.state === SessionState.failed) {
+        throw new Error(session.failureReason || 'SAS session failed')
+      }
+
       await delay(50)
     }
   } else {
@@ -114,13 +118,20 @@ export const processProgram = async (
 
     await execFilePromise(executablePath, [codePath], writeStream)
       .then(() => {
-        session.completed = true
+        session.state = SessionState.completed
+
         process.logger.info('session completed', session)
       })
       .catch((err) => {
-        session.completed = true
+        session.state = SessionState.failed
-        session.crashed = err.toString()
+
-        process.logger.error('session crashed', session.id, session.crashed)
+        session.failureReason = err.toString()
+
+        process.logger.error(
+          'session crashed',
+          session.id,
+          session.failureReason
+        )
       })
 
     // copy the code file to log and end write stream

api/src/controllers/internal/spec/Execution.spec.ts

@@ -0,0 +1,117 @@
+import path from 'path'
+import os from 'os'
+import { createFile, deleteFolder, generateTimestamp } from '@sasjs/utils'
+import * as ProcessProgramModule from '../processProgram'
+import { ExecutionController, SessionExecutionError } from '../Execution'
+import { Session, SessionState, PreProgramVars } from '../../../types'
+import { RunTimeType } from '../../../utils'
+
+const preProgramVariables: PreProgramVars = {
+  username: 'testUser',
+  userId: 1,
+  displayName: 'Test User',
+  serverUrl: 'http://localhost:5000',
+  httpHeaders: []
+}
+
+describe('ExecutionController.executeProgram', () => {
+  let session: Session
+
+  beforeEach(() => {
+    const sessionId = `test-session-${generateTimestamp()}`
+    session = {
+      id: sessionId,
+      state: SessionState.pending,
+      creationTimeStamp: '0',
+      deathTimeStamp: '0',
+      path: path.join(os.tmpdir(), sessionId)
+    }
+  })
+
+  afterEach(async () => {
+    jest.restoreAllMocks()
+    await deleteFolder(session.path)
+  })
+
+  // Regression coverage: for JS/PY/R, processProgram sets session.state to
+  // `failed` itself (without throwing) on a non-zero interpreter exit.
+  // ExecutionController.executeProgram used to unconditionally overwrite
+  // that back to `completed` right after processProgram returned, silently
+  // losing the failure for anything downstream that inspects session.state.
+  describe('JS/PY/R failure path', () => {
+    it('does not overwrite a failed session state back to completed', async () => {
+      // mirrors processProgram's real JS/PY/R branch on a non-zero exit:
+      // it sets state/failureReason itself and resolves - it does not throw
+      jest
+        .spyOn(ProcessProgramModule, 'processProgram')
+        .mockImplementation(async () => {
+          session.state = SessionState.failed
+          session.failureReason = 'Error: process exited with code 1'
+        })
+
+      const controller = new ExecutionController()
+
+      await controller.executeProgram({
+        program: 'throw new Error("boom")',
+        preProgramVariables,
+        vars: {},
+        session,
+        runTime: RunTimeType.JS
+      })
+
+      expect(session.state).toBe(SessionState.failed)
+    })
+
+    it('still marks a genuinely successful session as completed', async () => {
+      jest
+        .spyOn(ProcessProgramModule, 'processProgram')
+        .mockImplementation(async () => {
+          session.state = SessionState.completed
+        })
+
+      const controller = new ExecutionController()
+
+      await controller.executeProgram({
+        program: 'console.log("hello")',
+        preProgramVariables,
+        vars: {},
+        session,
+        runTime: RunTimeType.JS
+      })
+
+      expect(session.state).toBe(SessionState.completed)
+    })
+  })
+
+  describe('SAS failure path', () => {
+    it('throws a SessionExecutionError carrying the complete log when the session fails', async () => {
+      const logPath = path.join(session.path, 'log.log')
+      const logContent =
+        'NOTE: SAS session\nERROR: SAS session terminated. See log for details.\n'
+
+      await createFile(logPath, logContent)
+
+      jest
+        .spyOn(ProcessProgramModule, 'processProgram')
+        .mockImplementation(async () => {
+          throw new Error('ERROR: SAS session terminated. See log for details.')
+        })
+
+      const controller = new ExecutionController()
+
+      const resultPromise = controller.executeProgram({
+        program: '%abort;',
+        preProgramVariables,
+        vars: {},
+        session,
+        runTime: RunTimeType.SAS
+      })
+
+      await expect(resultPromise).rejects.toBeInstanceOf(SessionExecutionError)
+      await expect(resultPromise).rejects.toMatchObject({
+        log: logContent,
+        message: expect.stringContaining('SAS session terminated')
+      })
+    })
+  })
+})

api/src/controllers/internal/spec/processProgram.spec.ts

@@ -0,0 +1,109 @@
+import path from 'path'
+import os from 'os'
+import { createFile, deleteFolder, generateTimestamp } from '@sasjs/utils'
+import { processProgram } from '../processProgram'
+import { Session, SessionState, PreProgramVars } from '../../../types'
+import {
+  RunTimeType,
+  getSessionsFolder,
+  generateUniqueFileName
+} from '../../../utils'
+
+const preProgramVariables: PreProgramVars = {
+  username: 'testUser',
+  userId: 1,
+  displayName: 'Test User',
+  serverUrl: 'http://localhost:5000',
+  httpHeaders: []
+}
+
+const makeSession = (): Session => {
+  const sessionId = generateUniqueFileName(generateTimestamp())
+  const sessionFolder = path.join(getSessionsFolder(), sessionId)
+  const creationTimeStamp = sessionId.split('-').pop() as string
+  const deathTimeStamp = (
+    parseInt(creationTimeStamp) +
+    15 * 60 * 1000 -
+    1000
+  ).toString()
+
+  return {
+    id: sessionId,
+    state: SessionState.running,
+    creationTimeStamp,
+    deathTimeStamp,
+    path: sessionFolder
+  }
+}
+
+describe('processProgram (SAS runtime)', () => {
+  let session: Session
+  let logPath: string
+  let weboutPath: string
+  let headersPath: string
+  let tokenFile: string
+
+  beforeAll(() => {
+    const root = path.join(
+      os.tmpdir(),
+      `sasjs-processProgram-spec-${generateTimestamp()}`
+    )
+    process.sasjsRoot = root
+    process.driveLoc = path.join(root, 'drive')
+  })
+
+  beforeEach(async () => {
+    session = makeSession()
+    logPath = path.join(session.path, 'log.log')
+    weboutPath = path.join(session.path, 'webout.txt')
+    headersPath = path.join(session.path, 'stpsrv_header.txt')
+    tokenFile = path.join(session.path, 'reqHeaders.txt')
+    await createFile(weboutPath, '')
+  })
+
+  afterEach(async () => {
+    await deleteFolder(session.path)
+  })
+
+  it('rejects instead of hanging when the session fails (e.g. %abort;)', async () => {
+    setTimeout(() => {
+      session.state = SessionState.failed
+      session.failureReason =
+        'ERROR: SAS session terminated. See log for details.'
+    }, 100)
+
+    await expect(
+      processProgram(
+        '%abort;',
+        preProgramVariables,
+        {},
+        session,
+        weboutPath,
+        headersPath,
+        tokenFile,
+        RunTimeType.SAS,
+        logPath
+      )
+    ).rejects.toThrow(/SAS session terminated/)
+  }, 3000)
+
+  it('resolves without throwing when the session completes normally', async () => {
+    setTimeout(() => {
+      session.state = SessionState.completed
+    }, 100)
+
+    await expect(
+      processProgram(
+        '%put hello world;',
+        preProgramVariables,
+        {},
+        session,
+        weboutPath,
+        headersPath,
+        tokenFile,
+        RunTimeType.SAS,
+        logPath
+      )
+    ).resolves.toBeUndefined()
+  }, 3000)
+})

api/src/controllers/session.ts

@@ -1,6 +1,8 @@
 import express from 'express'
 import { Request, Security, Route, Tags, Example, Get } from 'tsoa'
 import { UserResponse } from './user'
+import { getSessionController } from './internal'
+import { SessionState } from '../types'
 
 interface SessionResponse extends Omit<UserResponse, 'uid'> {
   id: string
@@ -28,6 +30,18 @@ export class SessionController {
   ): Promise<SessionResponse> {
     return session(request)
   }
+
+  /**
+   * The polling endpoint is currently implemented for single-server deployments only.<br>
+   * Load balanced / grid topologies will be supported in a future release.<br>
+   * If your site requires this, please reach out to SASjs Support.
+   * @summary Get session state (initialising, pending, running, completed, failed).
+   * @example completed
+   */
+  @Get('/:sessionId/state')
+  public async sessionState(sessionId: string): Promise<SessionState> {
+    return sessionState(sessionId)
+  }
 }
 
 const session = (req: express.Request) => ({
@@ -37,3 +51,23 @@ const session = (req: express.Request) => ({
   isAdmin: req.user!.isAdmin,
   needsToUpdatePassword: req.user!.needsToUpdatePassword
 })
+
+const sessionState = (sessionId: string): SessionState => {
+  for (let runTime of process.runTimes) {
+    // get session controller for each available runTime
+    const sessionController = getSessionController(runTime)
+
+    // get session by sessionId
+    const session = sessionController.getSessionById(sessionId)
+
+    // return session state if session was found
+    if (session) {
+      return session.state
+    }
+  }
+
+  throw {
+    code: 404,
+    message: `Session with ID '${sessionId}' was not found.`
+  }
+}

api/src/controllers/stp.ts

@@ -1,10 +1,12 @@
 import express from 'express'
 import { Request, Security, Route, Tags, Post, Body, Get, Query } from 'tsoa'
-import { ExecutionController, ExecutionVars } from './internal'
+import {
+  ExecutionController,
+  ExecutionVars,
+  getSessionController
+} from './internal'
 import {
   getPreProgramVariables,
-  HTTPHeaders,
-  LogLine,
   makeFilesNamesMap,
   getRunTimeAndFilePath
 } from '../utils'
@@ -18,6 +20,36 @@ interface ExecutePostRequestPayload {
   _program?: string
 }
 
+interface TriggerProgramPayload {
+  /**
+   * Location of SAS program.
+   * @example "/Public/somefolder/some.file"
+   */
+  _program: string
+  /**
+   * Amount of minutes after the completion of the program when the session must be
+   * destroyed.
+   * @example 15
+   */
+  expiresAfterMins?: number
+  /**
+   * Query param for setting debug mode.
+   */
+  _debug?: number
+}
+
+interface TriggerProgramResponse {
+  /**
+   * `sessionId` is the ID of the session and the name of the temporary folder
+   * used to store program outputs.<br><br>
+   * For SAS, this would be the location of the SASWORK folder.<br><br>
+   * `sessionId` can be used to poll session state using the
+   * GET /SASjsApi/session/{sessionId}/state endpoint.
+   * @example "20241028074744-54132-1730101664824"
+   */
+  sessionId: string
+}
+
 @Security('bearerAuth')
 @Route('SASjsApi/stp')
 @Tags('STP')
@@ -25,20 +57,31 @@ export class STPController {
   /**
    * Trigger a Stored Program using the _program URL parameter.
    *
-   * Accepts URL parameters and file uploads.  For more details, see docs:
+   * Accepts additional URL parameters (converted to session variables)
+   * and file uploads.  For more details, see docs:
    *
    * https://server.sasjs.io/storedprograms
    *
    * @summary Execute a Stored Program, returns _webout and (optionally) log.
-   * @param _program Location of code in SASjs Drive
+   * @param _program Location of Stored Program in SASjs Drive.
+   * @param _debug Optional query param for setting debug mode (returns the session log in the response body).
    * @example _program "/Projects/myApp/some/program"
+   * @example _debug 131
    */
   @Get('/execute')
   public async executeGetRequest(
     @Request() request: express.Request,
-    @Query() _program: string
+    @Query() _program: string,
+    @Query() _debug?: number
   ): Promise<string | Buffer> {
-    const vars = request.query as ExecutionVars
+    let vars = request.query as ExecutionVars
+    if (_debug) {
+      vars = {
+        ...vars,
+        _debug
+      }
+    }
+
     return execute(request, _program, vars)
   }
 
@@ -69,6 +112,26 @@ export class STPController {
 
     return execute(request, program!, vars, otherArgs)
   }
+
+  /**
+   * Trigger Program on the Specified Runtime.
+   * @summary Triggers program and returns SessionId immediately - does not wait for program completion.
+   * @param _program Location of code in SASjs Drive.
+   * @param expiresAfterMins Optional query param for setting amount of minutes after the completion of the program when the session must be destroyed.
+   * @param _debug Optional query param for setting debug mode.
+   * @example _program "/Projects/myApp/some/program"
+   * @example _debug 131
+   * @example expiresAfterMins 15
+   */
+  @Post('/trigger')
+  public async triggerProgram(
+    @Request() request: express.Request,
+    @Query() _program: string,
+    @Query() _debug?: number,
+    @Query() expiresAfterMins?: number
+  ): Promise<TriggerProgramResponse> {
+    return triggerProgram(request, { _program, _debug, expiresAfterMins })
+  }
 }
 
 const execute = async (
@@ -98,6 +161,56 @@ const execute = async (
     }
 
     return result
+  } catch (err: any) {
+    throw {
+      code: 400,
+      status: 'failure',
+      message: 'Job execution failed.',
+      error: typeof err === 'object' ? err.toString() : err,
+      log: err?.log
+    }
+  }
+}
+
+const triggerProgram = async (
+  req: express.Request,
+  { _program, _debug, expiresAfterMins }: TriggerProgramPayload
+): Promise<TriggerProgramResponse> => {
+  try {
+    // put _program query param into vars object
+    const vars: { [key: string]: string | number } = { _program }
+
+    // if present add _debug query param to vars object
+    if (_debug) {
+      vars._debug = _debug
+    }
+
+    // get code path and runTime
+    const { codePath, runTime } = await getRunTimeAndFilePath(_program)
+
+    // get session controller based on runTime
+    const sessionController = getSessionController(runTime)
+
+    // get session
+    const session = await sessionController.getSession()
+
+    // add expiresAfterMins to session if provided
+    if (expiresAfterMins) {
+      // expiresAfterMins.used is set initially to false
+      session.expiresAfterMins = { mins: expiresAfterMins, used: false }
+    }
+
+    // call executeFile method of ExecutionController without awaiting
+    new ExecutionController().executeFile({
+      programPath: codePath,
+      runTime,
+      preProgramVariables: getPreProgramVariables(req),
+      vars,
+      session
+    })
+
+    // return session id
+    return { sessionId: session.id }
   } catch (err: any) {
     throw {
       code: 400,

api/src/controllers/user.ts

@@ -279,7 +279,7 @@ const getUser = async (
     username: user.username,
     isActive: user.isActive,
     isAdmin: user.isAdmin,
-    autoExec: getAutoExec ? user.autoExec ?? '' : undefined,
+    autoExec: getAutoExec ? (user.autoExec ?? '') : undefined,
     groups: user.groups
   }
 }

api/src/controllers/web.ts

@@ -106,7 +106,10 @@ const login = async (
   const rateLimiter = RateLimiter.getInstance()
 
   if (!validPass) {
-    const retrySecs = await rateLimiter.consume(req.ip, user?.username)
+    const retrySecs = await rateLimiter.consume(
+      req.ip || 'unknown',
+      user?.username
+    )
     if (retrySecs > 0) throw errors.tooManyRequests(retrySecs)
   }
 
@@ -114,7 +117,7 @@ const login = async (
   if (!validPass) throw errors.invalidPassword
 
   // Reset on successful authorization
-  rateLimiter.resetOnSuccess(req.ip, user.username)
+  rateLimiter.resetOnSuccess(req.ip || 'unknown', user.username)
 
   req.session.loggedIn = true
   req.session.user = {

api/src/middlewares/authenticateToken.ts

@@ -37,10 +37,10 @@ export const authenticateAccessToken: RequestHandler = async (
         if (user.isActive) {
           req.user = user
           return csrfProtection(req, res, nextFunction)
-        } else return res.sendStatus(401)
+        } else return res.status(401).send('Unauthorized')
       }
     }
-    return res.sendStatus(401)
+    return res.status(401).send('Unauthorized')
   }
 
   await authenticateToken(
@@ -118,6 +118,6 @@ const authenticateToken = async (
       return next()
     }
 
-    res.sendStatus(401)
+    res.status(401).send('Unauthorized')
   }
 }

api/src/middlewares/bruteForceProtection.ts

@@ -3,7 +3,7 @@ import { convertSecondsToHms } from '@sasjs/utils'
 import { RateLimiter } from '../utils'
 
 export const bruteForceProtection: RequestHandler = async (req, res, next) => {
-  const ip = req.ip
+  const ip = req.ip || 'unknown'
   const username = req.body.username
 
   const rateLimiter = RateLimiter.getInstance()

api/src/model/Group.ts

@@ -84,7 +84,7 @@ groupSchema.post('save', function (group: IGroup, next: Function) {
 })
 
 // pre remove hook to remove all references of group from users
-groupSchema.pre('remove', async function () {
+groupSchema.pre('remove', async function (this: IGroupDocument) {
   const userIds = this.users
   await Promise.all(
     userIds.map(async (userId) => {

api/src/routes/api/code.ts

@@ -1,5 +1,5 @@
 import express from 'express'
-import { runCodeValidation } from '../../utils'
+import { runCodeValidation, triggerCodeValidation } from '../../utils'
 import { CodeController } from '../../controllers/'
 
 const runRouter = express.Router()
@@ -28,4 +28,22 @@ runRouter.post('/execute', async (req, res) => {
   }
 })
 
+runRouter.post('/trigger', async (req, res) => {
+  const { error, value: body } = triggerCodeValidation(req.body)
+  if (error) return res.status(400).send(error.details[0].message)
+
+  try {
+    const response = await controller.triggerCode(req, body)
+
+    res.status(200)
+    res.send(response)
+  } catch (err: any) {
+    const statusCode = err.code
+
+    delete err.code
+
+    res.status(statusCode).send(err)
+  }
+})
+
 export default runRouter

api/src/routes/api/session.ts

@@ -1,16 +1,37 @@
 import express from 'express'
 import { SessionController } from '../../controllers'
+import { sessionIdValidation } from '../../utils'
 
 const sessionRouter = express.Router()
 
+const controller = new SessionController()
+
 sessionRouter.get('/', async (req, res) => {
-  const controller = new SessionController()
   try {
     const response = await controller.session(req)
+
     res.send(response)
   } catch (err: any) {
     res.status(403).send(err.toString())
   }
 })
 
+sessionRouter.get('/:sessionId/state', async (req, res) => {
+  const { error, value: params } = sessionIdValidation(req.params)
+  if (error) return res.status(400).send(error.details[0].message)
+
+  try {
+    const response = await controller.sessionState(params.sessionId)
+
+    res.status(200)
+    res.send(response)
+  } catch (err: any) {
+    const statusCode = err.code
+
+    delete err.code
+
+    res.status(statusCode).send(err)
+  }
+})
+
 export default sessionRouter

api/src/routes/api/spec/code.spec.ts

@@ -0,0 +1,132 @@
+import path from 'path'
+import { createFile, fileExists } from '@sasjs/utils'
+import { Express } from 'express'
+import mongoose, { Mongoose } from 'mongoose'
+import { MongoMemoryServer } from 'mongodb-memory-server'
+import request from 'supertest'
+import {
+  UserController,
+  PermissionController,
+  PermissionType,
+  PermissionSettingForRoute,
+  PrincipalType
+} from '../../../controllers/'
+import {
+  generateAccessToken,
+  saveTokensInDB,
+  RunTimeType,
+  sysInitCompiledPath
+} from '../../../utils'
+
+// Real, unmocked end-to-end test of the SAS execution pipeline (session
+// spawn -> autoexec handshake -> exit code -> HTTP response), using a fake
+// "SAS executable" (mockSas.js) in place of a real SAS install. This is the
+// regression test for issue #388: SAS code that aborts (%abort;) used to
+// hang the request forever instead of returning an error response.
+const mockSasPath = path.join(__dirname, 'files', 'mockSas.js')
+
+const clientId = 'codeSpecClientID'
+
+const user = {
+  displayName: 'Code Spec User',
+  username: 'codeSpecUsername',
+  password: '87654321',
+  isAdmin: false,
+  isActive: true
+}
+
+let app: Express
+let accessToken: string
+
+describe('code', () => {
+  let con: Mongoose
+  let mongoServer: MongoMemoryServer
+  let userController: UserController
+  let permissionController: PermissionController
+
+  beforeAll(async () => {
+    // SASSessionController.createSession() unconditionally reads this file
+    // (Session.ts:105) before it ever spawns the SAS process. It's normally
+    // produced by `npm run compileSysInit` (part of the `initial`/`build`
+    // scripts), which `npm test` does not run - so on a fresh checkout
+    // (e.g. CI, where "Run Unit Tests" happens before "Build Package") it
+    // doesn't exist yet. Content is irrelevant here since mockSas.js never
+    // interprets it; it just needs to exist and be readable.
+    if (!(await fileExists(sysInitCompiledPath))) {
+      await createFile(sysInitCompiledPath, '')
+    }
+
+    mongoServer = await MongoMemoryServer.create()
+    process.env.DB_CONNECT = mongoServer.getUri()
+    process.env.MODE = 'server'
+    process.env.RUN_TIMES = 'sas'
+    process.env.SAS_PATH = mockSasPath
+
+    const appPromise = (await import('../../../app')).default
+    app = await appPromise
+
+    con = await mongoose.connect(mongoServer.getUri())
+
+    userController = new UserController()
+    permissionController = new PermissionController()
+
+    const dbUser = await userController.createUser(user)
+    accessToken = await generateAndSaveToken(dbUser.id)
+
+    await permissionController.createPermission({
+      path: '/SASjsApi/code/execute',
+      type: PermissionType.route,
+      principalType: PrincipalType.user,
+      principalId: dbUser.id,
+      setting: PermissionSettingForRoute.grant
+    })
+
+    process.runTimes = [RunTimeType.SAS]
+    process.sasLoc = mockSasPath
+  }, 30000)
+
+  afterAll(async () => {
+    await con.connection.dropDatabase()
+    await con.connection.close()
+    await mongoServer.stop()
+  })
+
+  describe('execute', () => {
+    it('returns 200 with the mock log when the SAS program completes normally', async () => {
+      const response = await request(app)
+        .post('/SASjsApi/code/execute')
+        .auth(accessToken, { type: 'bearer' })
+        .send({ code: '%put hello world;', runTime: 'sas' })
+        .expect(200)
+
+      expect(response.text).toEqual(
+        expect.stringContaining('mock SAS execution')
+      )
+    }, 30000)
+
+    it('returns a prompt 400 (not a hang) with the complete log when the SAS session fails (%abort;)', async () => {
+      const response = await request(app)
+        .post('/SASjsApi/code/execute')
+        .auth(accessToken, { type: 'bearer' })
+        .send({ code: '%abort;', runTime: 'sas' })
+        .expect(400)
+
+      expect(response.body).toMatchObject({
+        status: 'failure',
+        message: 'Job execution failed.'
+      })
+      expect(response.body.log).toEqual(
+        expect.stringContaining('mock SAS execution')
+      )
+    }, 30000)
+  })
+})
+
+const generateAndSaveToken = async (userId: number) => {
+  const accessToken = generateAccessToken({
+    clientId,
+    userId
+  })
+  await saveTokensInDB(userId, clientId, accessToken, 'refreshToken')
+  return accessToken
+}

api/src/routes/api/spec/drive.spec.ts

@@ -28,6 +28,15 @@ jest
   .spyOn(fileUtilModules, 'getUploadsFolder')
   .mockImplementation(() => path.join(tmpFolder, 'uploads'))
 
+// getFilesFolder() resolves via getSasjsDriveFolder()/process.driveLoc, a
+// separate root from getSasjsRootFolder()/process.sasjsRoot above - without
+// this, every test in this file that creates content under the drive (e.g.
+// 'level1', 'my/path/...') writes into the real, shared sasjs_root/drive
+// instead of this run's isolated tmpFolder, leaking state into later runs.
+jest
+  .spyOn(fileUtilModules, 'getFilesFolder')
+  .mockImplementation(() => path.join(tmpFolder, 'drive', 'files'))
+
 import appPromise from '../../../app'
 import {
   UserController,

api/src/routes/api/spec/files/mockSas.js

@@ -0,0 +1,105 @@
+#!/usr/bin/env node
+
+// Minimal fake "SAS executable" used by tests in place of a real SAS
+// install. It only fulfils the CLI/filesystem handshake contract that
+// Session.ts / processProgram.ts rely on:
+//
+//   -SYSIN <path>   the file used as a signal channel: it starts out
+//                    containing a dummy (empty) placeholder, we delete it
+//                    to signal "session ready", then wait for it to be
+//                    rewritten with the real submitted program.
+//   -LOG <path>     where we write a fake log so downstream fileExists()/
+//                    readFile() calls have something to find.
+//
+// It does NOT interpret real SAS syntax. Exit code is the only thing that
+// matters to the Node side: 0 mimics a normal SAS termination, non-zero
+// mimics an abnormal one (e.g. %abort;).
+
+const fs = require('fs')
+
+const arg = (flag) => {
+  const idx = process.argv.indexOf(flag)
+
+  return idx === -1 ? undefined : process.argv[idx + 1]
+}
+
+const sysin = arg('-SYSIN')
+const logPath = arg('-LOG')
+
+// Give up waiting for the real program after this long, so an unused
+// pre-warmed session (sasjs pools up to 3 ready sessions) doesn't linger
+// forever and keep a test process alive. Generous rather than tight: CI
+// runners are frequently slower/more contended than a local dev machine
+// (shared CPU, coverage instrumentation on the Node side slowing down the
+// round trip this process is waiting on), and this cost is only ever paid
+// by sessions nothing is actually waiting on - the session actually used
+// by a request gets its real code written far sooner than this in practice.
+const GIVE_UP_AFTER_MS = 8000
+
+const sleepSync = (ms) => {
+  const until = Date.now() + ms
+
+  while (Date.now() < until) {
+    /* busy-wait, mirroring the real autoexec's SAS-side sleep() loop */
+  }
+}
+
+// Any of the filesystem calls below can legitimately race against
+// processProgram's own write-then-rename (e.g. existsSync sees the file,
+// then a rename mid-flight makes the following read miss). Treat that as
+// "not ready yet" and retry a few times, rather than letting an uncaught
+// exception crash this process with a non-zero exit - which would be
+// indistinguishable, to the Node side, from a genuine SAS failure.
+const retry = (fn, attempts = 5, delayMs = 20) => {
+  for (let i = 0; i < attempts; i++) {
+    try {
+      return { ok: true, value: fn() }
+    } catch (err) {
+      if (i === attempts - 1) return { ok: false, error: err }
+
+      sleepSync(delayMs)
+    }
+  }
+}
+
+// 1. remove the dummy SYSIN, signalling "session ready" to waitForSession()
+if (sysin) {
+  retry(() => {
+    if (fs.existsSync(sysin)) fs.unlinkSync(sysin)
+  })
+}
+
+// 2. wait for the real program to be written back to the same path
+const deadline = Date.now() + GIVE_UP_AFTER_MS
+
+while (!sysin || !fs.existsSync(sysin)) {
+  if (Date.now() > deadline) process.exit(0)
+
+  sleepSync(10)
+}
+
+// small settle delay, mirroring the real autoexec's sleep(0.01,1) after
+// detecting the file, so a fast-moving rename isn't read mid-write
+sleepSync(50)
+
+const readResult = retry(() => fs.readFileSync(sysin, 'utf-8'))
+
+if (!readResult.ok) {
+  process.stderr.write(
+    `mockSas.js: failed to read ${sysin}: ${readResult.error}\n`
+  )
+  process.exit(1)
+}
+
+const code = readResult.value
+
+if (logPath) {
+  retry(() => fs.writeFileSync(logPath, `NOTE: mock SAS execution\n${code}\n`))
+}
+
+if (code.includes('%abort;')) {
+  process.stderr.write('ERROR: SAS session terminated. See log for details.\n')
+  process.exit(1)
+}
+
+process.exit(0)

api/src/routes/api/spec/stp.spec.ts

@@ -25,7 +25,7 @@ import {
   SASSessionController
 } from '../../../controllers/internal'
 import * as ProcessProgramModule from '../../../controllers/internal/processProgram'
-import { Session } from '../../../types'
+import { Session, SessionState } from '../../../types'
 
 const clientId = 'someclientID'
 
@@ -493,10 +493,7 @@ const mockedGetSession = async () => {
 
   const session: Session = {
     id: sessionId,
-    ready: true,
+    state: SessionState.pending,
-    inUse: true,
-    consumed: false,
-    completed: false,
     creationTimeStamp,
     deathTimeStamp,
     path: sessionFolder

api/src/routes/api/spec/web.spec.ts

@@ -277,7 +277,10 @@ const performLogin = async (
     .set('x-xsrf-token', csrfToken)
     .send(credentials)
 
-  return { authCookies: header['set-cookie'].join() }
+  return {
+    authCookies:
+      (header['set-cookie'] as unknown as string[] | undefined)?.join() || ''
+  }
 }
 
 const extractCSRF = (text: string) =>

api/src/routes/api/stp.ts

@@ -1,5 +1,8 @@
 import express from 'express'
-import { executeProgramRawValidation } from '../../utils'
+import {
+  executeProgramRawValidation,
+  triggerProgramValidation
+} from '../../utils'
 import { STPController } from '../../controllers/'
 import { FileUploadController } from '../../controllers/internal'
 
@@ -13,7 +16,11 @@ stpRouter.get('/execute', async (req, res) => {
   if (error) return res.status(400).send(error.details[0].message)
 
   try {
-    const response = await controller.executeGetRequest(req, query._program)
+    const response = await controller.executeGetRequest(
+      req,
+      query._program,
+      query._debug
+    )
 
     if (response instanceof Buffer) {
       res.writeHead(200, (req as any).sasHeaders)
@@ -65,4 +72,28 @@ stpRouter.post(
   }
 )
 
+stpRouter.post('/trigger', async (req, res) => {
+  const { error, value: query } = triggerProgramValidation(req.query)
+
+  if (error) return res.status(400).send(error.details[0].message)
+
+  try {
+    const response = await controller.triggerProgram(
+      req,
+      query._program,
+      query._debug,
+      query.expiresAfterMins
+    )
+
+    res.status(200)
+    res.send(response)
+  } catch (err: any) {
+    const statusCode = err.code
+
+    delete err.code
+
+    res.status(statusCode).send(err)
+  }
+})
+
 export default stpRouter

api/src/types/Session.ts

@@ -1,11 +1,16 @@
+export enum SessionState {
+  initialising = 'initialising', // session is initialising and not ready to be used yet
+  pending = 'pending', // session is ready to be used
+  running = 'running', // session is in use
+  completed = 'completed', // session is completed and can be destroyed
+  failed = 'failed' // session failed
+}
 export interface Session {
   id: string
-  ready: boolean
+  state: SessionState
   creationTimeStamp: string
   deathTimeStamp: string
   path: string
-  inUse: boolean
+  expiresAfterMins?: { mins: number; used: boolean }
-  consumed: boolean
+  failureReason?: string
-  completed: boolean
-  crashed?: string
 }

api/src/utils/getTokensFromDB.ts

@@ -1,5 +1,6 @@
 import jwt from 'jsonwebtoken'
 import User from '../model/User'
+import { InfoJWT } from '../types/InfoJWT'
 
 const isValidToken = async (
   token: string,
@@ -11,7 +12,8 @@ const isValidToken = async (
     jwt.verify(token, key, (err, decoded) => {
       if (err) return reject(false)
 
-      if (decoded?.userId === userId && decoded?.clientId === clientId) {
+      const payload = decoded as InfoJWT
+      if (payload?.userId === userId && payload?.clientId === clientId) {
         return resolve(true)
       }
 

api/src/utils/setProcessVariables.ts

@@ -1,9 +1,31 @@
 import path from 'path'
-import { createFolder, getAbsolutePath, getRealPath } from '@sasjs/utils'
+import {
-
+  createFolder,
+  getAbsolutePath,
+  getRealPath,
+  fileExists
+} from '@sasjs/utils'
+import dotenv from 'dotenv'
 import { connectDB, getDesktopFields, ModeType, RunTimeType, SECRETS } from '.'
 
 export const setProcessVariables = async () => {
+  const { execPath } = process
+
+  // Check if execPath ends with 'api-macos' to determine executable for MacOS.
+  // This is needed to fix picking .env file issue in MacOS executable.
+  if (execPath) {
+    const envPathSplitted = execPath.split(path.sep)
+
+    if (envPathSplitted.pop() === 'api-macos') {
+      const envPath = path.join(envPathSplitted.join(path.sep), '.env')
+
+      // Override environment variables from envPath if file exists
+      if (await fileExists(envPath)) {
+        dotenv.config({ path: envPath, override: true })
+      }
+    }
+  }
+
   const { MODE, RUN_TIMES } = process.env
 
   if (MODE === ModeType.Server) {
@@ -21,6 +43,7 @@ export const setProcessVariables = async () => {
   if (process.env.NODE_ENV === 'test') {
     process.sasjsRoot = path.join(process.cwd(), 'sasjs_root')
     process.driveLoc = path.join(process.cwd(), 'sasjs_root', 'drive')
+
     return
   }
 
@@ -41,7 +64,9 @@ export const setProcessVariables = async () => {
 
   const { SASJS_ROOT } = process.env
   const absPath = getAbsolutePath(SASJS_ROOT ?? 'sasjs_root', process.cwd())
+
   await createFolder(absPath)
+
   process.sasjsRoot = getRealPath(absPath)
 
   const { DRIVE_LOCATION } = process.env
@@ -49,6 +74,7 @@ export const setProcessVariables = async () => {
     DRIVE_LOCATION ?? path.join(process.sasjsRoot, 'drive'),
     process.cwd()
   )
+
   await createFolder(absDrivePath)
   process.driveLoc = getRealPath(absDrivePath)
 
@@ -57,7 +83,9 @@ export const setProcessVariables = async () => {
     LOG_LOCATION ?? path.join(process.sasjsRoot, 'logs'),
     process.cwd()
   )
+
   await createFolder(absLogsPath)
+
   process.logsLoc = getRealPath(absLogsPath)
 
   process.logsUUID = 'SASJS_LOGS_SEPARATOR_163ee17b6ff24f028928972d80a26784'

api/src/utils/upload.ts

@@ -51,9 +51,8 @@ export const generateFileUploadSasCode = async (
   let fileCount = 0
   const uploadedFiles: UploadedFiles[] = []
 
-  const sasSessionFolderList: string[] = await listFilesInFolder(
+  const sasSessionFolderList: string[] =
-    sasSessionFolder
+    await listFilesInFolder(sasSessionFolder)
-  )
   sasSessionFolderList.forEach((fileName) => {
     let fileCountString = fileCount < 100 ? '0' + fileCount : fileCount
     fileCountString = fileCount < 10 ? '00' + fileCount : fileCount

api/src/utils/validation.ts

@@ -183,9 +183,31 @@ export const runCodeValidation = (data: any): Joi.ValidationResult =>
     runTime: Joi.string().valid(...process.runTimes)
   }).validate(data)
 
+export const triggerCodeValidation = (data: any): Joi.ValidationResult =>
+  Joi.object({
+    code: Joi.string().required(),
+    runTime: Joi.string().valid(...process.runTimes),
+    expiresAfterMins: Joi.number().greater(0)
+  }).validate(data)
+
 export const executeProgramRawValidation = (data: any): Joi.ValidationResult =>
   Joi.object({
-    _program: Joi.string().required()
+    _program: Joi.string().required(),
+    _debug: Joi.number()
   })
     .pattern(/^/, Joi.alternatives(Joi.string(), Joi.number()))
     .validate(data)
+
+export const triggerProgramValidation = (data: any): Joi.ValidationResult =>
+  Joi.object({
+    _program: Joi.string().required(),
+    _debug: Joi.number(),
+    expiresAfterMins: Joi.number().greater(0)
+  })
+    .pattern(/^/, Joi.alternatives(Joi.string(), Joi.number()))
+    .validate(data)
+
+export const sessionIdValidation = (data: any): Joi.ValidationResult =>
+  Joi.object({
+    sessionId: Joi.string().required()
+  }).validate(data)

web/package.json

@@ -4,7 +4,9 @@
   "private": true,
   "scripts": {
     "start": "webpack-dev-server --config webpack.dev.ts --hot",
-    "build": "webpack --config webpack.prod.ts"
+    "build": "webpack --config webpack.prod.ts",
+    "lint": "npx prettier --check \"src/**/*.{ts,tsx,js,jsx,html,css,sass,less,yml,md,graphql}\"",
+    "lint:fix": "npx prettier --write \"src/**/*.{ts,tsx,js,jsx,html,css,sass,less,yml,md,graphql}\""
   },
   "dependencies": {
     "@emotion/react": "^11.4.1",
@@ -19,9 +21,8 @@
     "@types/jest": "^26.0.24",
     "@types/node": "^12.20.28",
     "@types/react": "^17.0.27",
-    "axios": "^0.24.0",
+    "axios": "1.12.2",
     "monaco-editor": "^0.33.0",
-    "monaco-editor-webpack-plugin": "^7.0.1",
     "react": "^17.0.2",
     "react-copy-to-clipboard": "^5.1.0",
     "react-dom": "^17.0.2",
@@ -54,8 +55,9 @@
     "eslint-webpack-plugin": "^3.1.1",
     "file-loader": "^6.2.0",
     "html-webpack-plugin": "5.5.0",
+    "monaco-editor-webpack-plugin": "^7.0.1",
     "path": "0.12.7",
-    "prettier": "^2.4.1",
+    "prettier": "^3.0.3",
     "sass": "^1.44.0",
     "sass-loader": "^12.3.0",
     "style-loader": "^3.3.1",

web/src/components/snackbar.tsx

@@ -3,12 +3,11 @@ import Snackbar from '@mui/material/Snackbar'
 import MuiAlert, { AlertProps } from '@mui/material/Alert'
 import Slide, { SlideProps } from '@mui/material/Slide'
 
-const Alert = React.forwardRef<HTMLDivElement, AlertProps>(function Alert(
+const Alert = React.forwardRef<HTMLDivElement, AlertProps>(
-  props,
+  function Alert(props, ref) {
-  ref
-) {
     return <MuiAlert elevation={6} ref={ref} variant="filled" {...props} />
-})
+  }
+)
 
 const Transition = (props: SlideProps) => {
   return <Slide {...props} direction="up" />

web/src/containers/Studio/editor.tsx

@@ -62,6 +62,7 @@ const SASjsEditor = ({
     selectedRunTime,
     showDiff,
     webout,
+    printOutput,
     Dialog,
     handleChangeRunTime,
     handleDiffEditorDidMount,
@@ -153,6 +154,7 @@ const SASjsEditor = ({
           >
             <TabList onChange={handleTabChange} centered>
               <StyledTab label="Code" value="code" />
+              {log && (
                 <StyledTab
                   label={logWithErrorsOrWarnings ? '' : 'log'}
                   value="log"
@@ -169,6 +171,8 @@ const SASjsEditor = ({
                     if (logWrapper) logWrapper.scrollTop = 0
                   }}
                 />
+              )}
+              {webout && (
                 <StyledTab
                   label={
                     <Tooltip title="Displays content from the _webout fileref">
@@ -177,6 +181,8 @@ const SASjsEditor = ({
                   }
                   value="webout"
                 />
+              )}
+              {printOutput && <StyledTab label="print" value="printOutput" />}
             </TabList>
           </Box>
 
@@ -222,11 +228,20 @@ const SASjsEditor = ({
               <LogComponent log={log} selectedRunTime={selectedRunTime} />
             )}
           </StyledTabPanel>
+          {webout && (
             <StyledTabPanel value="webout">
               <div>
                 <pre>{webout}</pre>
               </div>
             </StyledTabPanel>
+          )}
+          {printOutput && (
+            <StyledTabPanel value="printOutput">
+              <div>
+                <pre>{printOutput}</pre>
+              </div>
+            </StyledTabPanel>
+          )}
         </TabContext>
       )}
       <Dialog />

web/src/containers/Studio/internal/components/log/log.module.css

@@ -7,8 +7,10 @@
   border: none;
   outline: none;
   transition: 0.4s;
-  box-shadow: rgba(0, 0, 0, 0.2) 0px 2px 1px -1px,
+  box-shadow:
-    rgba(0, 0, 0, 0.14) 0px 1px 1px 0px, rgba(0, 0, 0, 0.12) 0px 1px 3px 0px;
+    rgba(0, 0, 0, 0.2) 0px 2px 1px -1px,
+    rgba(0, 0, 0, 0.14) 0px 1px 1px 0px,
+    rgba(0, 0, 0, 0.12) 0px 1px 3px 0px;
 }
 
 .ChunkDetails {

web/src/containers/Studio/internal/hooks/useEditor.ts

@@ -39,14 +39,14 @@ const useEditor = ({
   const { Snackbar, setOpenSnackbar, setSnackbarMessage, setSnackbarSeverity } =
     useSnackbar()
   const [isLoading, setIsLoading] = useState(false)
-
   const [prevFileContent, setPrevFileContent] = useStateWithCallback('')
   const [fileContent, setFileContent] = useState('')
   const [log, setLog] = useState<LogObject | string>()
-  const [webout, setWebout] = useState('')
+  const [webout, setWebout] = useState<string>()
+  const [printOutput, setPrintOutput] = useState<string>()
   const [runTimes, setRunTimes] = useState<string[]>([])
-  const [selectedRunTime, setSelectedRunTime] = useState<RunTimeType | string>(
+  const [selectedRunTime, setSelectedRunTime] = useState<RunTimeType>(
-    ''
+    RunTimeType.SAS
   )
   const [selectedFileExtension, setSelectedFileExtension] = useState('')
   const [openFilePathInputModal, setOpenFilePathInputModal] = useState(false)
@@ -169,25 +169,30 @@ const useEditor = ({
           ),
           runTime: selectedRunTime
         })
-        .then((res: any) => {
+        .then((res: { data: string }) => {
-          if (selectedRunTime === RunTimeType.SAS) {
+          // INFO: the order of payload parts is set in @sasjs/server/api/src/controllers/internal/Execution.ts
-            const { errors, warnings, logLines } = parseErrorsAndWarnings(
+          const resDataSplitted = res.data.split(SASJS_LOGS_SEPARATOR)
-              res.data.split(SASJS_LOGS_SEPARATOR)[1]
+          const webout = resDataSplitted[0]
-            )
+          const log = resDataSplitted[1]
+          const printOutput = resDataSplitted[2]
 
-            const log: LogObject = {
+          if (selectedRunTime === RunTimeType.SAS) {
+            const { errors, warnings, logLines } = parseErrorsAndWarnings(log)
+
+            const logObject: LogObject = {
               body: logLines.join(`\n`),
               errors,
               warnings,
               linesCount: logLines.length
             }
 
-            setLog(log)
+            setLog(logObject)
           } else {
-            setLog(res.data.split(SASJS_LOGS_SEPARATOR)[1] ?? '')
+            setLog(log)
           }
 
-          setWebout(res.data.split(SASJS_LOGS_SEPARATOR)[0] ?? '')
+          setWebout(webout)
+          setPrintOutput(printOutput)
           setTab('log')
 
           // Scroll to bottom of log
@@ -335,6 +340,7 @@ const useEditor = ({
     selectedRunTime,
     showDiff,
     webout,
+    printOutput,
     Dialog,
     handleChangeRunTime,
     handleDiffEditorDidMount,

web/src/index.css

@@ -1,15 +1,15 @@
 body {
   margin: 0;
-  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
+  font-family:
-    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
+    -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu',
-    sans-serif;
+    'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
   -webkit-font-smoothing: antialiased;
   -moz-osx-font-smoothing: grayscale;
 }
 
 code {
-  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
+  font-family:
-    monospace;
+    source-code-pro, Menlo, Monaco, Consolas, 'Courier New', monospace;
 }
 
 .container {

web/src/index.html

@@ -1,4 +1,4 @@
-<!DOCTYPE html>
+<!doctype html>
 <html lang="en">
   <head>
     <meta charset="utf-8" />