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// @ts-check

import { context } from "esbuild";

import { existsSync } from "node:fs";

import path from "node:path";

const production = process.argv.includes("--production");

const watch = process.argv.includes("--watch");

/** @type {import('esbuild').BuildOptions} */

const nodeCommon = {

bundle: true,

format: "esm",

minify: production,

sourcemap: !production,

sourcesContent: false,

platform: "node",

// The ShellCheck wasm package is GPL and the extension is MIT: shipped as

// its own package under node_modules it is mere aggregation, bundled into

// dist/ it would make the bundle a derivative work. It also resolves the

// .wasm relative to its own import.meta.url, which only holds for the

// package's real files.

external: [

"vscode",

"@vscode-shellcheck/shellcheck-wasm",

"@vscode-shellcheck/shellcheck-wasm/*",

],

logLevel: "warning",

banner: {

// https://github.com/microsoft/vscode/issues/130367#issuecomment-2832464097

js: 'import { createRequire } from "node:module";\nconst require = createRequire(import.meta.url);',

},

};

async function main() {

const contexts = await Promise.all([

context({

...nodeCommon,

entryPoints: ["src/extension.ts"],

outfile: "dist/extension.js",

plugins: [

/* add to the end of plugins array */

esbuildProblemMatcherPlugin,

],

}),

// The worker is the only code that runs the guest; the extension bundle

// reaches the package solely through a dynamic import on the wasm path,

// so the native runtime never loads any of it. "vscode" is listed as

// external defensively: the worker has no extension host to import it

// from.

context({

...nodeCommon,

entryPoints: ["src/runtime/wasm/worker.ts"],

outfile: "dist/wasm-worker.js",

}),

context({

entryPoints: ["src/extension.ts"],

// .cjs: the package is "type": "module", and VS Code would load a .js

// entry as ESM, which the web extension host does not support.

outfile: "dist/web/extension.cjs",

bundle: true,

format: "cjs",

platform: "browser",

target: "es2022",

external: ["vscode"],

minify: production,

sourcemap: !production,

sourcesContent: false,

logLevel: "warning",

plugins: [webTwinPlugin, gplGuardPlugin, esbuildProblemMatcherPlugin],

}),

]);

if (watch) {

await Promise.all(contexts.map((ctx) => ctx.watch()));

} else {

await Promise.all(

contexts.map(async (ctx) => {

await ctx.rebuild();

await ctx.dispose();

}),

);

}

}

/**

* Resolves a relative import of `x.js` to `x.web.ts` wherever that twin

* exists, which is how the web entry drops every Node-only module.

*

* @type {import('esbuild').Plugin}

*/

const webTwinPlugin = {

name: "web-twin",

setup(build) {

build.onResolve({ filter: /^\.\.?\/.*\.js$/ }, (args) => {

const twin = path

.resolve(args.resolveDir, args.path)

.replace(/\.js$/, ".web.ts");

return existsSync(twin) ? { path: twin } : undefined;

});

},

};

/**

* The web entry is one MIT file, so only the package's MIT client may be

* bundled into it; the GPL worker is started from its own file instead.

*

* @type {import('esbuild').Plugin}

*/

const gplGuardPlugin = {

name: "gpl-guard",

setup(build) {

build.onResolve(

{ filter: /^@vscode-shellcheck\/shellcheck-wasm/ },

(args) =>

args.path === "@vscode-shellcheck/shellcheck-wasm/client"

? undefined

: {

errors: [

{

text: `The web extension may only bundle @vscode-shellcheck/shellcheck-wasm/client, not ${args.path}`,

},

],

},

);

},

};

/**

* @type {import('esbuild').Plugin}

*/

const esbuildProblemMatcherPlugin = {

name: "esbuild-problem-matcher",

setup(build) {

build.onStart(() => {

console.log("[watch] build started");

});

build.onEnd((result) => {

result.errors.forEach(({ text, location }) => {

console.error(`✘ [ERROR] ${text}`);

if (location == null) return;

console.error(

` ${location.file}:${location.line}:${location.column}:`,

);

});

console.log("[watch] build finished");

});

},

};

main().catch((e) => {

console.error(e);

process.exit(1);

});