metis/scripts/setupTypeScript.js
Julien Marquet 248a69e839 first commit
2021-11-15 01:34:24 +01:00

121 lines
3.9 KiB
JavaScript

// @ts-check
/** This script modifies the project to support TS code in .svelte files like:
<script lang="ts">
export let name: string;
</script>
As well as validating the code for CI.
*/
/** To work on this script:
rm -rf test-template template && git clone sveltejs/template test-template && node scripts/setupTypeScript.js test-template
*/
const fs = require("fs")
const path = require("path")
const { argv } = require("process")
const projectRoot = argv[2] || path.join(__dirname, "..")
// Add deps to pkg.json
const packageJSON = JSON.parse(fs.readFileSync(path.join(projectRoot, "package.json"), "utf8"))
packageJSON.devDependencies = Object.assign(packageJSON.devDependencies, {
"svelte-check": "^2.0.0",
"svelte-preprocess": "^4.0.0",
"@rollup/plugin-typescript": "^8.0.0",
"typescript": "^4.0.0",
"tslib": "^2.0.0",
"@tsconfig/svelte": "^2.0.0"
})
// Add script for checking
packageJSON.scripts = Object.assign(packageJSON.scripts, {
"check": "svelte-check --tsconfig ./tsconfig.json"
})
// Write the package JSON
fs.writeFileSync(path.join(projectRoot, "package.json"), JSON.stringify(packageJSON, null, " "))
// mv src/main.js to main.ts - note, we need to edit rollup.config.js for this too
const beforeMainJSPath = path.join(projectRoot, "src", "main.js")
const afterMainTSPath = path.join(projectRoot, "src", "main.ts")
fs.renameSync(beforeMainJSPath, afterMainTSPath)
// Switch the app.svelte file to use TS
const appSveltePath = path.join(projectRoot, "src", "App.svelte")
let appFile = fs.readFileSync(appSveltePath, "utf8")
appFile = appFile.replace("<script>", '<script lang="ts">')
appFile = appFile.replace("export let name;", 'export let name: string;')
fs.writeFileSync(appSveltePath, appFile)
// Edit rollup config
const rollupConfigPath = path.join(projectRoot, "rollup.config.js")
let rollupConfig = fs.readFileSync(rollupConfigPath, "utf8")
// Edit imports
rollupConfig = rollupConfig.replace(`'rollup-plugin-terser';`, `'rollup-plugin-terser';
import sveltePreprocess from 'svelte-preprocess';
import typescript from '@rollup/plugin-typescript';`)
// Replace name of entry point
rollupConfig = rollupConfig.replace(`'src/main.js'`, `'src/main.ts'`)
// Add preprocessor
rollupConfig = rollupConfig.replace(
'compilerOptions:',
'preprocess: sveltePreprocess({ sourceMap: !production }),\n\t\t\tcompilerOptions:'
);
// Add TypeScript
rollupConfig = rollupConfig.replace(
'commonjs(),',
'commonjs(),\n\t\ttypescript({\n\t\t\tsourceMap: !production,\n\t\t\tinlineSources: !production\n\t\t}),'
);
fs.writeFileSync(rollupConfigPath, rollupConfig)
// Add TSConfig
const tsconfig = `{
"extends": "@tsconfig/svelte/tsconfig.json",
"include": ["src/**/*"],
"exclude": ["node_modules/*", "__sapper__/*", "public/*"]
}`
const tsconfigPath = path.join(projectRoot, "tsconfig.json")
fs.writeFileSync(tsconfigPath, tsconfig)
// Add global.d.ts
const dtsPath = path.join(projectRoot, "src", "global.d.ts")
fs.writeFileSync(dtsPath, `/// <reference types="svelte" />`)
// Delete this script, but not during testing
if (!argv[2]) {
// Remove the script
fs.unlinkSync(path.join(__filename))
// Check for Mac's DS_store file, and if it's the only one left remove it
const remainingFiles = fs.readdirSync(path.join(__dirname))
if (remainingFiles.length === 1 && remainingFiles[0] === '.DS_store') {
fs.unlinkSync(path.join(__dirname, '.DS_store'))
}
// Check if the scripts folder is empty
if (fs.readdirSync(path.join(__dirname)).length === 0) {
// Remove the scripts folder
fs.rmdirSync(path.join(__dirname))
}
}
// Adds the extension recommendation
fs.mkdirSync(path.join(projectRoot, ".vscode"), { recursive: true })
fs.writeFileSync(path.join(projectRoot, ".vscode", "extensions.json"), `{
"recommendations": ["svelte.svelte-vscode"]
}
`)
console.log("Converted to TypeScript.")
if (fs.existsSync(path.join(projectRoot, "node_modules"))) {
console.log("\nYou will need to re-run your dependency manager to get started.")
}