WYRD UI

A fairly modern Vue 3 component library.

Install

import { createApp } from 'vue'
import { WyrdUI } from 'wyrd-ui'
import 'wyrd-ui/dist/style.css'

const app = createApp(App)
app.use(WyrdUI)

Use

<template>
  <WuiButton>naive-ui</WuiButton>
</template>

<script>
  import { defineComponent } from 'vue'
  import { WuiButton } from 'wyrd-ui'

  export default defineComponent({
    components: {
      WuiButton,
    },
  }),
</script>

Types

If you are using Volar, you can specify global component types by configuring compilerOptions.types in tsconfig.json.

// tsconfig.json
{
  "compilerOptions": {
    // ...
    "types": ["wyrd-ui/volar"]
  }
}

Utilities and constants

The library includes example utilities and constants. They are also exported in index.ts. The client app may use them as below:

<script lang="ts">
import { MyConstants, MyUtil } from 'my-lib'

export default {
  data () {
    return {
      magicNum: MyConstants.MAGIC_NUM
    }
  },
  methods: {
    add (a:number, b:number) {
      return MyUtil.add(a, b)
    }
  }
}
</script>

Styling

Individual compopnent may have styles defined in its .vue file. They will be processed, combined and minified into dist/style.css, which is included in the exports list in package.json.

If you have library level styles shared by all components in the library, you may add them to src/assets/main.scss. This file is imported in index.ts, therefore the processed styles are also included into dist/style.css. To avoid conflicting with other global styles, consider pre-fixing the class names or wrapping them into a namespace class.

If you have your own special set of SVG icons, you may create a font file (.woff format) using tools like Icomoon or Fontello. This starter includes an example font file src/assets/fonts/myfont.woff and references it in src/assets/main.scss, with utility icon CSS classes. An icon from the font file is used in Component A. Vite will include the font file into the build, see https://vitejs.dev/guide/assets.html.

The client app shall import style.css, usually in the entry file:

import 'my-lib/dist/style.css'

Third-party dependencies

Third-party libraries used by you library may bloat up the size of your library, if you simply add them to the dependencies in package.json.

The following are some strategies to reduce the size of your library:

Externalization

If you expect the client app of your library may also need the same dependency, you may externalize the dependency. For example, to exclude WyrdUI from your library build artifact, in vite.config.ts, you may have

module.exports = defineConfig({
    rollupOptions: {
      external: ['vue', 'wyrd-ui']
    }
  }
})

The dependency to be externalized may be declared as peer dependency in your library.

Cherry picking

If you don't expect the client app of your library also needing the same dependency, you may embed cherry-picked functions. For example, to embed the fill function of popular library lodash, import the fill function like the following:

import fill from 'lodash/fill'

Even with tree-shaking, the codes being brought into your library may still be large, as the function may have its own dependencies.

Note that import { fill } from 'lodash' or import _ from 'lodash' will not work and will embed the whole lodash library.

Finally, if your client app also use lodash and you don't want lodash to be in both the client app and your libraries, even after cherry-picking, you may consider cherry-picking in component library and re-export them as utils for client to consume, so that the client does not need to depend on lodash, therefore avoiding duplication.

Type generation

In tsconfig.json, the following options instructs tsc to emit declaration (.d.ts files) only, as vite build handles the .js file generation. The generated .d.ts files are sent to dist/types folder.

  "compilerOptions": {
    "declaration": true,
    "emitDeclarationOnly": true,
    "declarationDir": "./dist/types"
  }

In package.json, the line below locates the generated types for library client.

  "types": "./dist/types/index.d.ts",

In vite.config.ts, build.emptyOutDir is set to false and rimraf is used instead to remove the dist folder before the build. This is to avoid the dist/types folder generated by tsc being deleted when running vite build.

Configuration

TypeScript

In tsconfig.json, compilerOptions.isolatedModules is set to true as recommended by Vite (since esbuild is used). However, enableing this option leads to https://github.com/vitejs/vite/issues/5814. The workaround is to also enable compilerOptions.skipLibCheck.

Dependencies

In package.json, vue and wyrd-ui are declared in both peerDependencies and devDependencies. The former requires the client app to add these dependencies, and the later makes it easier to setup this library by simply running npm install.