feat(*): add line endings rule, add automatic formatting for fixable violations

src/format/shared.ts

@@ -0,0 +1,37 @@
+import { LintConfig } from '../types'
+import { LineEndings } from '../types/LineEndings'
+import { splitText } from '../utils/splitText'
+
+export const processText = (text: string, config: LintConfig) => {
+  const processedText = processContent(config, text)
+  const lines = splitText(processedText, config)
+  const formattedLines = lines.map((line) => {
+    return processLine(config, line)
+  })
+
+  const configuredLineEnding =
+    config.lineEndings === LineEndings.LF ? '\n' : '\r\n'
+  return formattedLines.join(configuredLineEnding)
+}
+
+const processContent = (config: LintConfig, content: string): string => {
+  let processedContent = content
+  config.fileLintRules
+    .filter((r) => !!r.fix)
+    .forEach((rule) => {
+      processedContent = rule.fix!(processedContent)
+    })
+
+  return processedContent
+}
+
+export const processLine = (config: LintConfig, line: string): string => {
+  let processedLine = line
+  config.lineLintRules
+    .filter((r) => !!r.fix)
+    .forEach((rule) => {
+      processedLine = rule.fix!(line)
+    })
+
+  return processedLine
+}