vite-plugin-runtime
Inject runtime environment variables and html based on the vite mode.
Installation
npm install --save-dev vite-plugin-runtime
or
yarn add vite-plugin-runtime --dev
runtimeEnv
Summary
This plugin allows build toolchains to inject variables at compile time instead of relying on multiple .env.* environment dotenv files.
This is especially useful for values that need to be managed externally from source code.
This plugin replaces usage of import.meta.env.VITE_* with import.meta.env.*.
| vite | vite-plugin-runtime |
|---|---|
import.meta.env.VITE_APP_KEY |
import.meta.env.APP_KEY |
.env file
| vite | vite-plugin-runtime |
|---|---|
VITE_APP_KEY=some value |
APP_KEY=some value |
During the build this plugin will convert all occurences of import.meta.env.* to window.env.*
| Code | Runtime |
|---|---|
import.meta.env.APP_KEY |
window.env.APP_KEY |
Usage
vite.config
The plugin options can be injected in the constructor or as a separate object on the vite config object.
import { runtimeEnv } from 'vite-plugin-runtime';
export default defineConfig({
plugins: [
runtimeEnv(),
],
runtimeEnv: {}, // optional configuration objectConfiguration
name
This is the name of the object attached to the window instance. Default is env.
name?: (() => string) | stringruntimeEnv({
name: 'customName',
}),outputs window.customName.*
generateTypes
Specificies whether to generate typescript types for import.meta.env. Default is false.
generateTypes?: booleanruntimeEnv({
generateTypes: true,
}),generatedTypesPath
The path to generate typescript types. Only takes affect if generateTypes is true. Default is process.cwd()
generatedTypesPath?: (() => string) | stringruntimeEnv({
generatedTypesPath: () => './src',
}),generatedTypesPath combined with generateTypes will create a type definition file env.d.ts:
/** generated by vite-plugin-runtime */
interface ImportMetaEnv {
readonly APP_KEY: string;
}
interface ImportMeta {
readonly env: ImportMetaEnv;
}injectHtml
Specifies whether to inject an env loading script into index.html. Defaults to true.
injectHtml?: booleanruntimeEnv({
injectHtml: false,
}),When true the plugin will inject
<script type="module">
import rtenv from '/env.js';
window.env = { ...window.env, ...rtenv };
</script>into the index.html <head></head> section.
The generated script will resemble:
export default {
APP_KEY: 'some value',
};runtimeHtml
Summary
This plugin allows an easy way to inject html into index.html at compile time based on the vite mode.
This is useful for scripts like google tag manager that should only be loaded for certain environments like production.
Usage
vite.config
The plugin options can be injected in the constructor or as a separate object on the vite config object.
import { runtimeHtml } from 'vite-plugin-runtime';
export default defineConfig({
plugins: [
runtimeHtml(),
],
runtimeHtml: {}, // optional configuration objectConfiguration
mode: HtmlTagDescriptor[]runtimeHtml({
production: [
{
tag: 'script',
attrs: {
type: 'text/javascript',
src: '/some_file.js',
},
injectTo: 'head',
},
],
staging: [
{
tag: 'title',
children: 'Staging',
}
]
}),