我希望 Typescript 是全局安装的 (npm i -g typescript
)。除了安装 JavaScript npm,你还应该安装 Typescript 版本。下面是一个例子,如何做到这一点,
npm install express @types/express
对存在 Typescript 版本的所有 npm 模块执行此操作。在这里分享 tsconfig.json 的配置。确保你在那里使用 commonjs。
检查以下配置是否适合您。
{
"compilerOptions": {
/* Visit https://aka.ms/tsconfig.json to read more about this file */
/* Basic Options */
// "incremental": true,/* Enable incremental compilation */
"target": "es5",/* Specify ECMAScript target version: 'ES3' (default),'ES5','ES2015','ES2016','ES2017','ES2018','ES2019','ES2020',or 'ESNEXT'. */
"module": "commonjs",/* Specify module code generation: 'none','commonjs','amd','system','umd','es2015','es2020',or 'ESNext'. */
// "lib": [],/* Specify library files to be included in the compilation. */
// "allowJs": true,/* Allow javascript files to be compiled. */
// "checkJs": true,/* Report errors in .js files. */
// "jsx": "preserve",/* Specify JSX code generation: 'preserve','react-native',or 'react'. */
"declaration": true,/* Generates corresponding '.d.ts' file. */
// "declarationMap": true,/* Generates a sourcemap for each corresponding '.d.ts' file. */
// "sourceMap": true,/* Generates corresponding '.map' file. */
// "outFile": "./",/* Concatenate and emit output to single file. */
"outDir": "./dist",/* Redirect output structure to the directory. */
// "rootDir": "./",/* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
// "composite": true,/* Enable project compilation */
// "tsBuildInfoFile": "./",/* Specify file to store incremental compilation information */
// "removeComments": true,/* Do not emit comments to output. */
// "noEmit": true,/* Do not emit outputs. */
// "importHelpers": true,/* Import emit helpers from 'tslib'. */
// "downlevelIteration": true,/* Provide full support for iterables in 'for-of',spread,and destructuring when targeting 'ES5' or 'ES3'. */
// "isolatedModules": true,/* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
/* Strict Type-Checking Options */
"strict": true,/* Enable all strict type-checking options. */
// "noImplicitAny": true,/* Raise error on expressions and declarations with an implied 'any' type. */
// "strictNullChecks": true,/* Enable strict null checks. */
// "strictFunctionTypes": true,/* Enable strict checking of function types. */
// "strictBindCallApply": true,/* Enable strict 'bind','call',and 'apply' methods on functions. */
// "strictPropertyInitialization": true,/* Enable strict checking of property initialization in classes. */
// "noImplicitThis": true,/* Raise error on 'this' expressions with an implied 'any' type. */
// "alwaysStrict": true,/* Parse in strict mode and emit "use strict" for each source file. */
/* Additional Checks */
// "noUnusedLocals": true,/* Report errors on unused locals. */
// "noUnusedParameters": true,/* Report errors on unused parameters. */
// "noImplicitReturns": true,/* Report error when not all code paths in function return a value. */
// "noFallthroughCasesInSwitch": true,/* Report errors for fallthrough cases in switch statement. */
/* Module Resolution Options */
// "moduleResolution": "node",/* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
// "baseUrl": "./",/* Base directory to resolve non-absolute module names. */
// "paths": {},/* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
// "rootDirs": [],/* List of root folders whose combined content represents the structure of the project at runtime. */
// "typeRoots": [],/* List of folders to include type definitions from. */
// "types": [],/* Type declaration files to be included in compilation. */
// "allowSyntheticDefaultImports": true,/* Allow default imports from modules with no default export. This does not affect code emit,just typechecking. */
"esModuleInterop": true,/* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
// "preserveSymlinks": true,/* Do not resolve the real path of symlinks. */
// "allowUmdGlobalAccess": true,/* Allow accessing UMD globals from modules. */
/* Source Map Options */
// "sourceRoot": "",/* Specify the location where debugger should locate TypeScript files instead of source locations. */
// "mapRoot": "",/* Specify the location where debugger should locate map files instead of generated locations. */
// "inlineSourceMap": true,/* Emit a single file with source maps instead of having a separate file. */
// "inlineSources": true,/* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
/* Experimental Options */
// "experimentalDecorators": true,/* Enables experimental support for ES7 decorators. */
// "emitDecoratorMetadata": true,/* Enables experimental support for emitting type metadata for decorators. */
/* Advanced Options */
"skipLibCheck": true,/* Skip type checking of declaration files. */
"forceConsistentCasingInFileNames": true /* Disallow inconsistently-cased references to the same file. */
}
} ```
,
您可以查看 Stackoverflow Questions 1 和 2,其中 OP 也遇到过类似的错误。
在上述两种情况下,问题都已通过在 package.json 文件中的 Type 字段中添加值“module”得到解决。
语法:
{
“Type” : “module”
}
请检查是否正确添加了类型值,并确保您正在使用 Nodejs 的最新版本,如果版本在 13 之前,那么您还必须在 package.json 文件中添加一个标志以及以上变化。
语法:
node --experimental-modules program.js
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