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使用typescript開發angular模組(編寫模組)

前言

開始開發模組

開發過程不是自己想了那麼順利,但是還是有點可取的地方。

安裝依賴專案

  "dependencies": {
    "@angular/common": "^5.0.2",
    "@angular/core": "^5.0.2",
    "moment": "^2.22.1",
    "rxjs": "^5.5.2",
    "zone.js": "^0.8.4"
  },
  "devDependencies": {
    "@types/core-js": "^0.9.35",
    "typescript": "^2.8.1",
    "typings"
: "^2.1.1" }

配置tsconfig.json檔案

{
  "compilerOptions": {
    /* Basic Options */
    "typeRoots": [                 // 主要配置了這個
      "node_modules/@types"
    ],
    "lib": [                // 還有這個
      "es2017",
      "dom"
    ],
    "target": "es5",                          /* Specify ECMAScript target version: 'ES3'
(default), 'ES5', 'ES2015', 'ES2016', 'ES2017','ES2018' or 'ESNEXT'. */ //"module": "commonjs", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 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. */ // "sourceMap": true, /* Generates corresponding '.map' file. */ // "outFile": "./", /* Concatenate and emit output to single file. */ // "outDir": "./", /* Redirect output structure to the directory. */ // "rootDir": "./", /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */ // "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. */ // "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. */ /* 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. */ } }

編寫程式碼

像寫普通的angular模組一樣
image.png
index.ts

import { NgModule } from '@angular/core';
import {CommonModule} from "@angular/common";
import {BlogApiService} from "./provider";

@NgModule({
    imports: [
        CommonModule
    ],
    providers:    [ BlogApiService ],
})
export class MzcNgApiModule { }

釋出使用

似乎哪裡沒有配置正確,引入MzcNgApiModule 來使用時編譯要報錯。但是引入BlogApiService使用卻很正常

在我們的angular專案中安裝

npm i mzc-ng-api

能正常使用的情況如下

import { Injectable } from '@angular/core';
import {HttpClient} from '@angular/common/http';
import {BlogApiService} from  "mzc-ng-api/src/provider"
export * from "mzc-ng-api/src/provider"

@Injectable()
export class BlogService extends BlogApiService{
  constructor(protected http: HttpClient) {
    super(http)
  }
}

編譯通過,在下面的地方能正確呼叫BlogApiService裡的方法

import {BlogService, PreNoteDto,GetNoteDto} from "../blog.service";

export class NoteListComponent implements OnInit {
  preNoteList:PreNoteDto[]=[];
  loadMore = false;
  loading =false;
  key="";

  constructor(private router: Router,
  private blogService :BlogService
  ) { }

  ngOnInit() {
    this.getNoteList(true);
  }
  getNoteList(f=false){
    this.loading= true;
    if(f)this.preNoteList =[];
    const param = new GetNoteDto();
    param.key = this.key;
    param.SkipCount = this.preNoteList.length;
    this.blogService.GetNoteList(param).do(()=>{
      this.loading = false;
    }).subscribe(m=> {
      m.items.forEach((v,i)=>{
        v.content = marked(v.content);
        this.preNoteList.push(v);
      });
      this.loadMore = m.totalCount>this.preNoteList.length;
    });
  }
}

不能正常使用的方法如下

在app.module.ts中

import {MzcNgApiModule} from 'mzc-ng-api'

  imports: [
    RouterModule,
    MzcNgApiModule,
    BrowserModule,
    NgZorroAntdModule.forRoot(),
    RoutesModule,
    BrowserAnimationsModule
  ],

這樣引入進來,還沒有使用編譯都會報錯。錯誤內容幾乎也時看不明白,先記錄下來,日後慢慢解決。
image.png

未完待續

原始碼地址