VSCodeにて”tsc”コマンドを実行したが、以下のエラーメッセージが出て、JSファイルが生成されませんでした。
error TS5014: Failed to parse file 'tsconfig.json': Unexpected token / in JSON at position 29.
・tsconfig.json
json
1{ 2 "compilerOptions": { 3 /* Basic Options */ 4 // "incremental": true, /* Enable incremental compilation */ 5 "target": "es6", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */ 6 "module": "commonjs", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */ 7 // "lib": [ 8 // "ES6", 9 // "DOM", 10 // "DOM.Iterable", 11 // "ScriptHost" 12 // ], /* Specify library files to be included in the compilation. */ 13 // "allowJs": true, /* Allow javascript files to be compiled. */ 14 // "checkJs": true, /* Report errors in .js files. */ 15 // "jsx": "preserve", /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */ 16 // "declaration": true, /* Generates corresponding '.d.ts' file. */ 17 // "declarationMap": true, /* Generates a sourcemap for each corresponding '.d.ts' file. */ 18 // "sourceMap": true, /* Generates corresponding '.map' file. */ 19 // "outFile": "./", /* Concatenate and emit output to single file. */ 20 "outDir": "./dist", /* Redirect output structure to the directory. */ 21 "rootDir": "./src", /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */ 22 // "composite": true, /* Enable project compilation */ 23 // "tsBuildInfoFile": "./", /* Specify file to store incremental compilation information */ 24 // "removeComments": true, /* Do not emit comments to output. */ 25 // "noEmit": true, /* Do not emit outputs. */ 26 // "importHelpers": true, /* Import emit helpers from 'tslib'. */ 27 // "downlevelIteration": true, /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */ 28 // "isolatedModules": true, /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */ 29 "noEmitOnError": true, 30 /* Strict Type-Checking Options */ 31 "strict": true, /* Enable all strict type-checking options. */ 32 // "noImplicitAny": true, /* Raise error on expressions and declarations with an implied 'any' type. */ 33 // "strictNullChecks": true, /* Enable strict null checks. */ 34 // "strictFunctionTypes": true, /* Enable strict checking of function types. */ 35 // "strictBindCallApply": true, /* Enable strict 'bind', 'call', and 'apply' methods on functions. */ 36 // "strictPropertyInitialization": true, /* Enable strict checking of property initialization in classes. */ 37 // "noImplicitThis": true, /* Raise error on 'this' expressions with an implied 'any' type. */ 38 // "alwaysStrict": true, /* Parse in strict mode and emit "use strict" for each source file. */ 39 /* Additional Checks */ 40 // "noUnusedLocals": true, /* Report errors on unused locals. */ 41 // "noUnusedParameters": true, /* Report errors on unused parameters. */ 42 // "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */ 43 // "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */ 44 /* Module Resolution Options */ 45 // "moduleResolution": "node", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */ 46 // "baseUrl": "./", /* Base directory to resolve non-absolute module names. */ 47 // "paths": {}, /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */ 48 // "rootDirs": [], /* List of root folders whose combined content represents the structure of the project at runtime. */ 49 // "typeRoots": [], /* List of folders to include type definitions from. */ 50 // "types": [], /* Type declaration files to be included in compilation. */ 51 // "allowSyntheticDefaultImports": true, /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */ 52 "esModuleInterop": true, /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */ 53 // "preserveSymlinks": true, /* Do not resolve the real path of symlinks. */ 54 // "allowUmdGlobalAccess": true, /* Allow accessing UMD globals from modules. */ 55 /* Source Map Options */ 56 // "sourceRoot": "", /* Specify the location where debugger should locate TypeScript files instead of source locations. */ 57 // "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */ 58 // "inlineSourceMap": true, /* Emit a single file with source maps instead of having a separate file. */ 59 // "inlineSources": true, /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */ 60 /* Experimental Options */ 61 "experimentalDecorators": true, /* Enables experimental support for ES7 decorators. */ 62 // "emitDecoratorMetadata": true, /* Enables experimental support for emitting type metadata for decorators. */ 63 /* Advanced Options */ 64 "forceConsistentCasingInFileNames": true /* Disallow inconsistently-cased references to the same file. */ 65 } 66 // "include": [ 67 // "index.ts" 68 // ], 69 // "exclude": [ 70 // "**/compiler.ts", 71 // "*.spec.ts", 72 // "node_modules" 73 // ], 74 // "files": [ 75 // "tmp/compiler.ts" 76 // ] 77} 78
・他に試したこと
他のTSのプロジェクトでtscコマンドを試す。
→同じエラーメッセージ。
・環境
OS:Mac Mojave
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