nodejs脚本创建新组件

需求：

npm run gen Hello

指令生成Hello.vue、hello.scss，并在相应文件中添加

场景：

• 组件库的开发

参考：

1. elementUI （nodejs脚本）

https://github.com/ElemeFE/element/blob/dev/build/bin/new.js
插件 file-save （封装fs模块， 链式调用代替回调）

2. element-plus (shell脚本)

https://github.com/element-plus/element-plus/blob/dev/scripts/gc.sh

"gen": "bash ./scripts/gc.sh"

分析：

新文件， 创建

旧文件， 读取-修改-重写入

实现

console.log();
process.on('exit', () => {
  console.log();
});
if (!process.argv[2]) {
  console.error('[组件名]必填 - Please enter new component name');
  process.exit(1);
}
const path = require('path');
const fs = require('fs');
const fileSave = require('file-save');
const uppercamelcase = require('uppercamelcase');
const componentname = process.argv[2];
const chineseName = process.argv[3] || componentname;
const ComponentName = uppercamelcase(componentname);
const PackagePath = path.resolve(__dirname, '../../packages', componentname);
const Files = [
  {
    filename: 'index.js',
    content: `import ${ComponentName} from './src/main';
/* istanbul ignore next */
${ComponentName}.install = function(Vue) {
  Vue.component(${ComponentName}.name, ${ComponentName});
};
export default ${ComponentName};`
  },
  {
    filename: 'src/main.vue',
    content: `<template>
  <div class="el-${componentname}"></div>
</template>
<script>
export default {
  name: 'El${ComponentName}'
};
</script>`
  },
  {
    filename: path.join('../../examples/docs/zh-CN', `${componentname}.md`),
    content: `## ${ComponentName} ${chineseName}`
  },
  {
    filename: path.join('../../examples/docs/en-US', `${componentname}.md`),
    content: `## ${ComponentName}`
  },
  {
    filename: path.join('../../examples/docs/es', `${componentname}.md`),
    content: `## ${ComponentName}`
  },
  {
    filename: path.join('../../examples/docs/fr-FR', `${componentname}.md`),
    content: `## ${ComponentName}`
  },
  {
    filename: path.join('../../test/unit/specs', `${componentname}.spec.js`),
    content: `import { createTest, destroyVM } from '../util';
import ${ComponentName} from 'packages/${componentname}';
describe('${ComponentName}', () => {
  let vm;
  afterEach(() => {
    destroyVM(vm);
  });
  it('create', () => {
    vm = createTest(${ComponentName}, true);
    expect(vm.$el).to.exist;
  });
});
`
  },
  {
    filename: path.join('../../packages/theme-chalk/src', `${componentname}.scss`),
    content: `@import "mixins/mixins";
@import "common/var";
@include b(${componentname}) {
}`
  },
  {
    filename: path.join('../../types', `${componentname}.d.ts`),
    content: `import { ElementUIComponent } from './component'
/** ${ComponentName} Component */
export declare class El${ComponentName} extends ElementUIComponent {
}`
  }
];
// 添加到 components.json
const componentsFile = require('../../components.json');
if (componentsFile[componentname]) {
  console.error(`${componentname} 已存在.`);
  process.exit(1);
}
componentsFile[componentname] = `./packages/${componentname}/index.js`;
fileSave(path.join(__dirname, '../../components.json'))
  .write(JSON.stringify(componentsFile, null, '  '), 'utf8')
  .end('\n');
// 添加到 index.scss
const sassPath = path.join(__dirname, '../../packages/theme-chalk/src/index.scss');
const sassImportText = `${fs.readFileSync(sassPath)}@import "./${componentname}.scss";`;
fileSave(sassPath)
  .write(sassImportText, 'utf8')
  .end('\n');
// 添加到 element-ui.d.ts
const elementTsPath = path.join(__dirname, '../../types/element-ui.d.ts');
let elementTsText = `${fs.readFileSync(elementTsPath)}
/** ${ComponentName} Component */
export class ${ComponentName} extends El${ComponentName} {}`;
const index = elementTsText.indexOf('export') - 1;
const importString = `import { El${ComponentName} } from './${componentname}'`;
elementTsText = elementTsText.slice(0, index) + importString + '\n' + elementTsText.slice(index);
fileSave(elementTsPath)
  .write(elementTsText, 'utf8')
  .end('\n');
// 创建 package
Files.forEach(file => {
  fileSave(path.join(PackagePath, file.filename))
    .write(file.content, 'utf8')
    .end('\n');
});
// 添加到 nav.config.json
const navConfigFile = require('../../examples/nav.config.json');
Object.keys(navConfigFile).forEach(lang => {
  let groups = navConfigFile[lang][4].groups;
  groups[groups.length - 1].list.push({
    path: `/${componentname}`,
    title: lang === 'zh-CN' && componentname !== chineseName
      ? `${ComponentName} ${chineseName}`
      : ComponentName
  });
});
fileSave(path.join(__dirname, '../../examples/nav.config.json'))
  .write(JSON.stringify(navConfigFile, null, '  '), 'utf8')
  .end('\n');
console.log('DONE!');