Feature request: Add a trailing comma to generated tsconfig.json (microsoft#502)

Author: aeschli

generators/app/templates/ext-command-ts/tsconfig.json

@@ -8,7 +8,7 @@
 		],
 		"sourceMap": true,
 		"rootDir": "src",
-		"strict": true   /* enable all strict type-checking options */
+		"strict": true,   /* enable all strict type-checking options */
 		/* Additional Checks */
 		// "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
 		// "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */

generators/app/templates/ext-command-ts/vscode-esbuild/tsconfig.json

@@ -7,7 +7,7 @@
 		],
 		"sourceMap": true,
 		"rootDir": "src",
-		"strict": true   /* enable all strict type-checking options */
+		"strict": true,   /* enable all strict type-checking options */
 		/* Additional Checks */
 		// "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
 		// "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */

generators/app/templates/ext-command-ts/vscode-webpack/tsconfig.json

@@ -7,7 +7,7 @@
 		],
 		"sourceMap": true,
 		"rootDir": "src",
-		"strict": true   /* enable all strict type-checking options */
+		"strict": true,   /* enable all strict type-checking options */
 		/* Additional Checks */
 		// "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
 		// "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */

generators/app/templates/ext-command-web/tsconfig.json

@@ -8,7 +8,7 @@
 		],
 		"sourceMap": true,
 		"rootDir": "src",
-		"strict": true   /* enable all strict type-checking options */
+		"strict": true,   /* enable all strict type-checking options */
 		/* Additional Checks */
 		// "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
 		// "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */

generators/app/templates/ext-notebook-renderer/src/tsconfig-base.json

@@ -7,7 +7,7 @@
     ],
     "types": ["node"],
     "sourceMap": true,
-    "strict": true   /* enable all strict type-checking options */
+    "strict": true,   /* enable all strict type-checking options */
     /* Additional Checks */
     // "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
     // "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */

package-lock.json

@@ -47,6 +47,7 @@
     "@types/node": "^18.19.57",
     "mocha": "^10.7.3",
     "yeoman-environment": "^4.4.3",
-    "yeoman-test": "^10.0.1"
+    "yeoman-test": "^10.0.1",
+    "jsonc-parser": "^3.3.1"
   }
 }

package.json

@@ -4,39 +4,9 @@
 
 import * as path from 'path';
 import { fileURLToPath } from 'url';
-import { RunResult, createHelpers } from 'yeoman-test';
+import { createHelpers } from 'yeoman-test';
+import { parse } from 'jsonc-parser';
 import * as env from '../generators/app/env.js';
-import { cwd } from 'process';
-
-function stripComments(content) {
-	/**
-	* First capturing group matches double quoted string
-	* Second matches single quotes string
-	* Third matches block comments
-	* Fourth matches line comments
-	*/
-	const regexp = /("(?:[^\\\"]*(?:\\.)?)*")|('(?:[^\\\']*(?:\\.)?)*')|(\/\*(?:\r?\n|.)*?\*\/)|(\/{2,}.*?(?:(?:\r?\n)|$))/g;
-	const result = content.replace(regexp, (match, m1, m2, m3, m4) => {
-		// Only one of m1, m2, m3, m4 matches
-		if (m3) {
-			// A block comment. Replace with nothing
-			return '';
-		} else if (m4) {
-			// A line comment. If it ends in \r?\n then keep it.
-			const length = m4.length;
-			if (length > 2 && m4[length - 1] === '\n') {
-				return m4[length - 2] === '\r' ? '\r\n' : '\n';
-			} else {
-				return '';
-			}
-		} else {
-			// We match a string
-			return match;
-		}
-	});
-	return result;
-}
-
 
 describe('test code generator', function () {
 	this.timeout(10000);
@@ -753,7 +723,7 @@ describe('test code generator', function () {
 
 			runResult.assertJsonFileContent('testCom/package.json', expectedPackageJSON);
 
-			const tsconfigBody = JSON.parse(stripComments(runResult.fs.read('testCom/tsconfig.json')));
+			const tsconfigBody = parse(runResult.fs.read('testCom/tsconfig.json'));
 			runResult.assertObjectContent(tsconfigBody, expectedTsConfig);
 		} finally {
 			cleanup(runResult);
@@ -833,7 +803,7 @@ describe('test code generator', function () {
 
 			runResult.assertJsonFileContent('testCom/package.json', expectedPackageJSON);
 
-			const tsconfigBody = JSON.parse(stripComments(runResult.fs.read('testCom/tsconfig.json')));
+			const tsconfigBody = parse(runResult.fs.read('testCom/tsconfig.json'));
 			runResult.assertObjectContent(tsconfigBody, expectedTsConfig);
 		} finally {
 			cleanup(runResult);
@@ -1196,7 +1166,7 @@ describe('test code generator', function () {
 				]
 			};
 
-			const jsconfigBody = JSON.parse(stripComments(runResult.fs.read('testCom/jsconfig.json')));
+			const jsconfigBody = parse(runResult.fs.read('testCom/jsconfig.json'));
 			runResult.assertObjectContent(jsconfigBody, expectedJSConfig);
 		} finally {
 			cleanup(runResult);