fix: json parse with tsconfig (#8)

Author: czy88840616

lib/index.js

@@ -4,9 +4,10 @@ const {
   debounce,
   getIp,
   deleteFolderRecursive,
-  readJSONFile,
+  readJSONCFile,
 } = require('./util');
 const path = require('path');
+const fs = require('fs');
 
 function run() {
   const [runCmd, tscArgs, runArgs, isCleanDirectory] = parseArgs(process.argv);
@@ -16,19 +17,30 @@ function run() {
   const projectIndex = tscArgs.findIndex(arg => arg === '--project');
   if (projectIndex !== -1) {
     const projectPath = tscArgs[projectIndex + 1];
-    const tsconfig = readJSONFile(path.resolve(cwd, projectPath));
-    outDir = tsconfig.compilerOptions.outDir;
+    const tsconfig = readJSONCFile(path.resolve(cwd, projectPath));
+    if (tsconfig.compilerOptions) {
+      outDir = tsconfig.compilerOptions.outDir;
+    }
   } else {
     const outDirIndex = tscArgs.findIndex(arg => arg === '--outDir');
     if (outDirIndex !== -1) {
       outDir = tscArgs[outDirIndex + 1];
     } else {
-      const tsconfig = readJSONFile(path.resolve(cwd, 'tsconfig.json'));
-      outDir = tsconfig.compilerOptions.outDir;
+      const tsconfig = readJSONCFile(path.resolve(cwd, 'tsconfig.json'));
+      if (tsconfig.compilerOptions) {
+        outDir = tsconfig.compilerOptions.outDir;
+      }
     }
   }
 
-  runArgs.push('--baseDir', path.resolve(cwd, outDir));
+  if (!outDir) {
+    outDir = 'dist';
+  }
+
+  const baseDir = path.resolve(cwd, outDir);
+  if (fs.existsSync(baseDir)) {
+    runArgs.push('--baseDir', path.resolve(cwd, outDir));
+  }
 
   if (isCleanDirectory) {
     /**

lib/util.js

@@ -131,3 +131,13 @@ exports.readJSONFile = function (filePath) {
     return {};
   }
 };
+
+exports.readJSONCFile = function (filePath) {
+  // eslint-disable-next-line node/no-unpublished-require
+  const ts = require('typescript');
+  const configFile = ts.readConfigFile(filePath, ts.sys.readFile);
+  if (configFile.error) {
+    console.error(configFile.error.messageText);
+  }
+  return configFile.config;
+};

test/fixtures/base/tsconfig.json

@@ -1,6 +1,6 @@
 {
   "compilerOptions": {
-    "target": "es2018",
+    "target": "es2018", // target es2018
     "module": "commonjs",
     "moduleResolution": "node",
     "experimentalDecorators": true,