fix: report syntax error (#4)

Co-authored-by: XiNiHa <[email protected]>
Co-authored-by: Anthony Fu <[email protected]>

Author: 3 people

.vscode/settings.json

@@ -36,6 +36,16 @@
     "markdown",
     "json",
     "jsonc",
-    "yaml"
+    "yaml",
+    "toml",
+    "xml",
+    "gql",
+    "graphql",
+    "astro",
+    "css",
+    "less",
+    "scss",
+    "pcss",
+    "postcss"
   ]
 }

src/rules/dprint.ts

@@ -39,9 +39,20 @@ export default {
     return {
       Program() {
         const sourceCode = context.sourceCode.text
-        const formatted = format(sourceCode, context.filename, context.options[0] || {})
+        try {
+          const formatted = format(sourceCode, context.filename, context.options[0] || {})
 
-        reportDifferences(context, sourceCode, formatted)
+          reportDifferences(context, sourceCode, formatted)
+        }
+        catch (error) {
+          context.report({
+            loc: {
+              start: { line: 1, column: 0 },
+              end: { line: 1, column: 0 },
+            },
+            message: 'Failed to format the code',
+          })
+        }
       },
     }
   },

src/rules/prettier.ts

@@ -1,5 +1,5 @@
 import { join } from 'node:path'
-import type { Rule } from 'eslint'
+import type { AST, Rule } from 'eslint'
 import { createSyncFn } from 'synckit'
 import type { Options } from 'prettier'
 import { messages, reportDifferences } from 'eslint-formatting-reporter'
@@ -36,12 +36,38 @@ export default {
     return {
       Program() {
         const sourceCode = context.sourceCode.text
-        const formatted = format(sourceCode, {
-          filepath: context.filename,
-          ...(context.options[0] || {}),
-        })
+        try {
+          const formatted = format(sourceCode, {
+            filepath: context.filename,
+            ...(context.options[0] || {}),
+          })
 
-        reportDifferences(context, sourceCode, formatted)
+          reportDifferences(context, sourceCode, formatted)
+        }
+        catch (err) {
+          if (!(err instanceof SyntaxError)) {
+            context.report({
+              loc: {
+                start: { line: 1, column: 0 },
+                end: { line: 1, column: 0 },
+              },
+              message: 'Failed to format the code',
+            })
+            return
+          }
+
+          let message = `Parsing error: ${err.message}`
+
+          const error = (err) as SyntaxError & { codeFrame: string, loc: AST.SourceLocation }
+
+          if (error.codeFrame)
+            message = message.replace(`\n${error.codeFrame}`, '')
+
+          if (error.loc)
+            message = message.replace(/ \(\d+:\d+\)$/, '')
+
+          context.report({ message, loc: error.loc })
+        }
       },
     }
   },