logancyang_obsidian-copilot/wasmPlugin.mjs

import * as fs from 'fs/promises';
import * as path from 'path';

const wasmPlugin = {
  name: 'wasm',
  setup(build) {
    build.onResolve({ filter: /\.wasm$/ }, args => {
      if (args.namespace === 'wasm-stub') {
        return {
          path: args.path,
          namespace: 'wasm-binary',
        }
      }

      if (args.resolveDir === '') {
        return
      }
      return {
        path: path.isAbsolute(args.path) ? args.path : path.join(args.resolveDir, args.path),
        namespace: 'wasm-stub',
      }
    })

    build.onLoad({ filter: /.*/, namespace: 'wasm-stub' }, async (args) => ({
      contents: `import wasm from ${JSON.stringify(args.path)}
        export default (imports) =>
          WebAssembly.instantiate(wasm, imports).then(
            result => result.instance.exports)`,
    }))

    build.onLoad({ filter: /.*/, namespace: 'wasm-binary' }, async (args) => ({
      contents: await fs.readFile(args.path),
      loader: 'binary',
    }))
  },
}

export default wasmPlugin;