Process and log results from eslint 🐗

eslint.config.js

@@ -0,0 +1,6 @@
+export default [{
+  rules: {
+    quotes: [2, 'single'],
+    semi: [2, 'never'],
+  },
+}]

src/linters/eslint.ts

@@ -1,23 +1,21 @@
 import { ESLint } from 'eslint'
 
-import { Linter, type LintReport, type ReportSummary } from '@Types'
+import { Linter, RuleSeverity } from '@Types'
+import colourLog from '@Utils/colourLog'
+import { formatResult } from '@Utils/transform'
+
+import type { LintReport, ReportResults, ReportSummary } from '@Types'
 
 const lintFiles = async (files: Array<string>): Promise<LintReport> => {
   try {
     const eslint = new ESLint({
-      // @ts-expect-error
-      overrideConfigFile: true,
-      overrideConfig: {
-        rules: {
-          'quotes': [2, 'single'],
-          'no-console': 2,
-          'no-ternary': 1,
-          'no-unused-vars': 2,
-        },
-      },
+      cache: false,
+      fix: false,
     })
 
-    const results = await eslint.lintFiles(files)
+    const results: Array<ESLint.LintResult> = await eslint.lintFiles(files)
+
+    const reportResults: ReportResults = {}
 
     const reportSummary: ReportSummary = {
       deprecatedRules: [],
@@ -29,21 +27,38 @@ const lintFiles = async (files: Array<string>): Promise<LintReport> => {
       warningCount: 0,
     }
 
-    results.forEach(({ errorCount, fixableErrorCount, fixableWarningCount, usedDeprecatedRules, warningCount }) => {
+    results.forEach(({ errorCount, filePath, fixableErrorCount, fixableWarningCount, messages, usedDeprecatedRules, warningCount }) => {
+      const file = filePath.replace(`${process.cwd()}/`, '')
+
       reportSummary.deprecatedRules = [...new Set([...reportSummary.deprecatedRules, ...usedDeprecatedRules.map(({ ruleId }) => ruleId)])]
       reportSummary.errorCount += errorCount
       reportSummary.fixableErrorCount += fixableErrorCount
       reportSummary.fixableWarningCount += fixableWarningCount
       reportSummary.warningCount += warningCount
+
+      messages.forEach(({ column, line, message, ruleId, severity }) => {
+        if (!reportResults[file]) {
+          reportResults[file] = []
+        }
+
+        reportResults[file].push(formatResult({
+          column,
+          lineNumber: line || 0,
+          message: message.trim(),
+          rule: ruleId || 'core-error',
+          severity: severity === 1 ? RuleSeverity.WARNING : RuleSeverity.ERROR,
+        }))
+      })
     })
 
     return {
-      results: {},
+      results: reportResults,
       summary: reportSummary,
     }
   } catch (error: any) {
-    console.error(error.stack)
-    throw error
+    colourLog.error('An error occurred while running eslint', error)
+    console.log()
+    process.exit(1)
   }
 }