1、创建文件夹
- 创建文件夹
mkdir TS_CODE_STUDY cd TS_CODE_STUDY
- 初始化项目
npm init -y // or npm init
- 初始化后生成的
package.json
文件
{ "name": "ts_code_study", "version": "1.0.0", "description": "source code ts-learning", "main": "index.js", "scripts": { "test": "echo \"Error: no test specified\" && exit 1" }, "keywords": ["typescript", "source_code"], "author": "genius<1*******@qq.com>", "license": "ISC MIT" }
2、构建项目目录
TS_CODE_STUDY |-----build | |-----webpack.config.js | |-----src | |-----api | |-----assets | |-----config | |-----example | |-----tools | |-----template | |------index.html | |-----utils | |-----index.ts | |-----typings
3、安装TS依赖
- 安装
typescript
、tslint
依赖
npm install typescript tslint -g
- 安装完依赖后,初始化TS,生成
tsconfig.json
文件
tsc --init
- 生成的
tsconfig.json
文件
{ "compilerOptions": { /* Visit https://aka.ms/tsconfig.json to read more about this file */ /* Projects */ // "incremental": true, /* Enable incremental compilation */ // "composite": true, /* Enable constraints that allow a TypeScript project to be used with project references. */ // "tsBuildInfoFile": "./", /* Specify the folder for .tsbuildinfo incremental compilation files. */ // "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": [], /* 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. */ /* 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. */ // "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": "./", /* 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, /* Type catch clause variables as 'unknown' instead of 'any'. */ // "alwaysStrict": true, /* Ensure 'use strict' is always emitted. */ // "noUnusedLocals": true, /* Enable error reporting when a 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, /* Include 'undefined' in index signature results */ // "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. */ } }
4、安装webpack环境
- 执行安装命令
npm install webpack webpack-cli webpack-dev-server -D // 安装完我这里的版本是 // webpack: 5.72.1 // webpack-cli: 4.9.2 // webpack-dev-server 4.9.0
- 配置
webpack.config.js
文件
const HtmlWebpackPlugin = require('html-webpack-plugin'); const {CleanWebpackPlugin} = require('clean-webpack-plugin'); const path = require('path'); module.exports = { entry: "./src/index.ts", output: { filename: "main.js", path: path.resolve(process.cwd(), './dist'), //必须配置这行代码,否则删除不掉dist中之前存在的js文件(写法不止一种) }, module: { rules: [ { test:/\.tsx?$/, use: 'ts-loader', exclude: /node_modules/ } ] }, devtool: process.env.NODE_ENV === 'production' ? false : 'inline-source-map', devServer: { // contentBase: './dist', static: { directory: path.join(__dirname, './dist'), }, compress: false, host: 'localhost', port: 8082 }, plugins: [ new CleanWebpackPlugin({ cleanOnceBeforeBuildPatterns: [path.resolve(__dirname, './dist')] }), new HtmlWebpackPlugin({ template: './src/template/index.html' }) ] }
- 在
package.json
文件中的“script”添加start
启动命令和build
打包命令
"scripts": { "test": "echo \"Error: no test specified\" && exit 1", "start": "cross-env NODE_ENV=development webpack-dev-server --config ./build/webpack.config.js", "build": "cross-env NODE_ENV=production webpack --config ./build/webpack.config.js" },
- 创建
./src/template/index.html
目录级文件 - 补充依赖
npm install ts-loader -D npm install cross-env -D npm install clean-webpack-plugin -D npm install html-webpack-plugin -D npm install typescript -D
5、测试代码环境
- 编辑
index.ts
文件
// 测试代码 let num: number = 666; console.log(num); document.title = "genius";
在浏览器输入:http://localhost:8082/
- 运行打包指令
npm run build
查看build下面的dist目录文件是否生成。