初始化

npm init -y

安装typescript

npm i typescript -g

tsc --init

tsconfig.json格式

{"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": [],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */// "jsx": "preserve",                                /* Specify what JSX code is generated. */"experimentalDecorators": true,                   //开启装饰器// "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": "./src/",                                  //入口目录// "moduleResolution": "node10",                     /* 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. */// "allowImportingTsExtensions": true,               /* Allow imports to include TypeScript file extensions. Requires '--moduleResolution bundler' and either '--noEmit' or '--emitDeclarationOnly' to be set. */// "resolvePackageJsonExports": true,                /* Use the package.json 'exports' field when resolving package imports. */// "resolvePackageJsonImports": true,                /* Use the package.json 'imports' field when resolving imports. */// "customConditions": [],                           /* Conditions to set in addition to the resolver-specific defaults when resolving imports. */// "resolveJsonModule": true,                        /* Enable importing .json files. */// "allowArbitraryExtensions": true,                 /* Enable importing files with any extension, provided a declaration file is present. */// "noResolve": true,                                /* Disallow 'import's, 'require's or ''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. */// "inlineSourceMap": true,                          /* Include sourcemap files inside the emitted JavaScript. */// "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": "./dist/",                                  //编译后存放的目录// "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. */// "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. */// "verbatimModuleSyntax": true,                     /* Do not transform or elide any imports or exports not marked as type-only, ensuring they are written in the output file's format based on the 'module' setting. */// "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. */}
}

编写一个ts文件

src/main.ts

interface User{id: number,name: string,sex: string
}
class UserClass implements User{id:number;name:string;sex:string;constructor(id: number,name: string,sex: string){// console.log(this)this.id = idthis.name = namethis.sex = sex}
}const user = new UserClass(0,'admin','保密')console.log(user)

使用

tsc -w

进行打包

创建一个html

index.html

我

使用electron进行桌面端操作

npm i electron

安装失败请在你的C:\User(用户)\用户名\.npmrc(可以用sublime text打开)(修改为electron国内镜像)

#最底下写入
ELECTRON_MIRROR=http://npm.taobao.org/mirrors/electron/

创建入口文件

我是定义在了src/electron/index.ts

import {app,BrowserWindow} from "electron"const createWin = () =>{const win = new BrowserWindow({width:1200,height:800})win.loadFile('../../index.html')
}app.whenReady().then(()=>{createWin()
})app.on('window-all-closed',()=>{app.quit()
})
//取消警告
process.env['ELECTRON_DISABLE_SECURITY_WARNINGS'] = 'true';//热加载
try {require('electron-reloader')(module);
} catch (_) { }

期间tsc -w一直在监听
我的编译出口文件夹如图

ts(入口)文件夹

修改package.json

{"name": "electron_html_ts_project","version": "1.0.0","description": "","main": "dist/electron/index.js",//electron入口文件"scripts": {"dev":"electron .", //手动添加dev"test": "echo \"Error: no test specified\" && exit 1"},"keywords": [],"author": "","license": "ISC","dependencies": {"electron": "^23.1.4" //npm i electron后自动生成的}
}

如果没有样式，请点击下图，来打开控制台

或者Ctrl+Shift+i

说明未找到index.html

首先请你对比一下上图的文件路径和你存放的路径是否一致，如果一致那么可以修改src/electron/index.ts文件了

import {app,BrowserWindow} from "electron"const createWin = () =>{const win = new BrowserWindow({width:1200,height:800})win.loadFile('index.html') //'../index.html'改为'index.html'
}app.whenReady().then(()=>{createWin()
})app.on('window-all-closed',()=>{app.quit()
})process.env['ELECTRON_DISABLE_SECURITY_WARNINGS'] = 'true';//热加载
try {require('electron-reloader')(module);
} catch (_) { }

重新退出编译(npm run dev)

这样一个一个简单的electron+html+typescript的项目搭建就完成了

ts装饰器

类装饰器-接口定义

*.d.ts(随便命名，比如main.d.ts)

declare type ClassDecorator = (target: TFunction) => TFunction | void;

普通装饰器（无法传参）

function hello(target:any){console.log("hello")
}@hello
class Test{constructor(){console.log('constructor')}
}const test = new Test()

装饰器工厂（可传参）

function hello(id:number){return function(target:any){console.log(target)target.id = id}
}@hello(1)
class Test{constructor(){console.log('constructor')}
}const test = new Test()

重载构造函数

function hello(target:any){return class extends target{sayHello(){console.log("hello")}}
}@hello
class Test{constructor(){console.log('constructor')}
}const test = new Test()

属性装饰器

*.d.ts(任何.d.ts，比如main.d.ts)

declare type PropertyDecorator = (target: Object, propertyKey: string | symbol) => void;

• target —— 对于静态成员来说是类的构造函数，对于实例成员是类原型对象。
• propertyKey —— 属性的名称。没有返回值。

function hello(value:string){return function (target: any,propertyName: string){target[propertyName] = value}
}class Test{constructor(){console.log('constructor')}@hello("我")name: string | undefined;}const test = new Test()
console.log(test.name)

结合interface

function idD(id:number){return function (target: any,propertyName: string){target[propertyName] = id}
}
interface User{@idD(0)id: number,name: string,sex: string
}function nameD(value:string){return function (target: any,propertyName: string){target[propertyName] = value}
}
class UserClass implements User{@idD(0)id:number;@nameD("admin")name:string;@nameD("保密")sex:string;constructor(){}
}

显然不行
这里的提示有一个签名

签名

以用字符串访问 JavaScript 中的对象（TypeScript 中也一样），用来保存对其他对象的引用。比如数组或对象对应位置的名字。

interface numberArray{[index:number]:string
}
const myArray:numberArray = ["1","2",3] //error