[nodejs开发] typescript引入js模块或文件
- 首先更改tsconfig.json 中的compilerOptions属性：
"moduleResolution": "Node" - 假设有一个abc.js其内容如下：
var Circle = (function () {function Circle() {}Circle.prototype.draw = function () {console.log("Cirlce is drawn");};return Circle; })(); exports.Circle = Circle; - 需要编写一个.d.ts声明文件 abc.js.d.ts：
declare module './abc' {export class Circle {draw():void} } - 然后在ts文件中这样调用：
/// <reference path = './abc.js.d.ts' /> import circle = require('./abc') var a = new circle.Circle() a.draw(); - 编译
tsc --build tsconfig.json - 附完整的tsconfig.json:
{"compilerOptions": {/* Visit https://aka.ms/tsconfig to read more about this file *//* Projects */// "incremental": true, /* Save .tsbuildinfo files to allow for incremental compilation of projects. */// "composite": true, /* Enable constraints that allow a TypeScript project to be used with project references. */// "tsBuildInfoFile": "./.tsbuildinfo", /* Specify the path to .tsbuildinfo incremental compilation file. */// "disableSourceOfProjectReferenceRedirect": true, /* Disable preferring source files instead of declaration files when referencing composite projects. */// "disableSolutionSearching": true, /* Opt a project out of multi-project reference checking when editing. */// "disableReferencedProjectLoad": true, /* Reduce the number of projects loaded automatically by TypeScript. *//* Language and Environment */"target": "es2016", /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */"lib": ["es6"], /* Specify a set of bundled library declaration files that describe the target runtime environment. */// "jsx": "preserve", /* Specify what JSX code is generated. */// "experimentalDecorators": true, /* Enable experimental support for TC39 stage 2 draft decorators. */// "emitDecoratorMetadata": true, /* Emit design-type metadata for decorated declarations in source files. */// "jsxFactory": "", /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */// "jsxFragmentFactory": "", /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */// "jsxImportSource": "", /* Specify module specifier used to import the JSX factory functions when using 'jsx: react-jsx*'. */// "reactNamespace": "", /* Specify the object invoked for 'createElement'. This only applies when targeting 'react' JSX emit. */// "noLib": true, /* Disable including any library files, including the default lib.d.ts. */// "useDefineForClassFields": true, /* Emit ECMAScript-standard-compliant class fields. */// "moduleDetection": "auto", /* Control what method is used to detect module-format JS files. *//* Modules */"module": "commonjs", /* Specify what module code is generated. */"rootDir": "./", /* Specify the root folder within your source files. */"moduleResolution": "node", /* Specify how TypeScript looks up a file from a given module specifier. */// "baseUrl": "./", /* Specify the base directory to resolve non-relative module names. */// "paths": {}, /* Specify a set of entries that re-map imports to additional lookup locations. */// "rootDirs": [], /* Allow multiple folders to be treated as one when resolving modules. */// "typeRoots": [], /* Specify multiple folders that act like './node_modules/@types'. */// "types": [], /* Specify type package names to be included without being referenced in a source file. */// "allowUmdGlobalAccess": true, /* Allow accessing UMD globals from modules. */// "moduleSuffixes": [], /* List of file name suffixes to search when resolving a module. *///"resolveJsonModule": true, /* Enable importing .json files. */// "noResolve": true, /* Disallow 'import's, 'require's or '<reference>'s from expanding the number of files TypeScript should add to a project. *//* JavaScript Support */"allowJs": true, /* Allow JavaScript files to be a part of your program. Use the 'checkJS' option to get errors from these files. */// "checkJs": true, /* Enable error reporting in type-checked JavaScript files. */// "maxNodeModuleJsDepth": 1, /* Specify the maximum folder depth used for checking JavaScript files from 'node_modules'. Only applicable with 'allowJs'. *//* Emit */// "declaration": true, /* Generate .d.ts files from TypeScript and JavaScript files in your project. */// "declarationMap": true, /* Create sourcemaps for d.ts files. */// "emitDeclarationOnly": true, /* Only output d.ts files and not JavaScript files. */// "sourceMap": true, /* Create source map files for emitted JavaScript files. */// "outFile": "./", /* Specify a file that bundles all outputs into one JavaScript file. If 'declaration' is true, also designates a file that bundles all .d.ts output. */"outDir": "build", /* Specify an output folder for all emitted files. */// "removeComments": true, /* Disable emitting comments. */// "noEmit": true, /* Disable emitting files from a compilation. */// "importHelpers": true, /* Allow importing helper functions from tslib once per project, instead of including them per-file. */// "importsNotUsedAsValues": "remove", /* Specify emit/checking behavior for imports that are only used for types. */// "downlevelIteration": true, /* Emit more compliant, but verbose and less performant JavaScript for iteration. */// "sourceRoot": "", /* Specify the root path for debuggers to find the reference source code. */// "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */// "inlineSourceMap": true, /* Include sourcemap files inside the emitted JavaScript. */// "inlineSources": true, /* Include source code in the sourcemaps inside the emitted JavaScript. */// "emitBOM": true, /* Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files. */// "newLine": "crlf", /* Set the newline character for emitting files. */// "stripInternal": true, /* Disable emitting declarations that have '@internal' in their JSDoc comments. */// "noEmitHelpers": true, /* Disable generating custom helper functions like '__extends' in compiled output. */// "noEmitOnError": true, /* Disable emitting files if any type checking errors are reported. */// "preserveConstEnums": true, /* Disable erasing 'const enum' declarations in generated code. */// "declarationDir": "./", /* Specify the output directory for generated declaration files. */// "preserveValueImports": true, /* Preserve unused imported values in the JavaScript output that would otherwise be removed. *//* Interop Constraints */// "isolatedModules": true, /* Ensure that each file can be safely transpiled without relying on other imports. */// "allowSyntheticDefaultImports": true, /* Allow 'import x from y' when a module doesn't have a default export. */"esModuleInterop": true, /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */// "preserveSymlinks": true, /* Disable resolving symlinks to their realpath. This correlates to the same flag in node. */"forceConsistentCasingInFileNames": true, /* Ensure that casing is correct in imports. *//* Type Checking */"strict": true, /* Enable all strict type-checking options. */"noImplicitAny": true, /* Enable error reporting for expressions and declarations with an implied 'any' type. */// "strictNullChecks": true, /* When type checking, take into account 'null' and 'undefined'. */// "strictFunctionTypes": true, /* When assigning functions, check to ensure parameters and the return values are subtype-compatible. */// "strictBindCallApply": true, /* Check that the arguments for 'bind', 'call', and 'apply' methods match the original function. */// "strictPropertyInitialization": true, /* Check for class properties that are declared but not set in the constructor. */// "noImplicitThis": true, /* Enable error reporting when 'this' is given the type 'any'. */// "useUnknownInCatchVariables": true, /* Default catch clause variables as 'unknown' instead of 'any'. */// "alwaysStrict": true, /* Ensure 'use strict' is always emitted. */// "noUnusedLocals": true, /* Enable error reporting when local variables aren't read. */// "noUnusedParameters": true, /* Raise an error when a function parameter isn't read. */// "exactOptionalPropertyTypes": true, /* Interpret optional property types as written, rather than adding 'undefined'. */// "noImplicitReturns": true, /* Enable error reporting for codepaths that do not explicitly return in a function. */// "noFallthroughCasesInSwitch": true, /* Enable error reporting for fallthrough cases in switch statements. */// "noUncheckedIndexedAccess": true, /* Add 'undefined' to a type when accessed using an index. */// "noImplicitOverride": true, /* Ensure overriding members in derived classes are marked with an override modifier. */// "noPropertyAccessFromIndexSignature": true, /* Enforces using indexed accessors for keys declared using an indexed type. */// "allowUnusedLabels": true, /* Disable error reporting for unused labels. */// "allowUnreachableCode": true, /* Disable error reporting for unreachable code. *//* Completeness */// "skipDefaultLibCheck": true, /* Skip type checking .d.ts files that are included with TypeScript. */"skipLibCheck": true /* Skip type checking all .d.ts files. */}
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