@fastly/js-compute/src/addSdkMetadataField.js

JavaScript SDK and CLI for building JavaScript applications on [Fastly Compute](https://www.fastly.com/products/edge-compute/serverless).

import { metadataAdd } from '@bytecodealliance/jco';
import { readFile, writeFile } from 'node:fs/promises';
import { dirname, join } from 'node:path';
import { fileURLToPath } from 'node:url';
const __dirname = dirname(fileURLToPath(import.meta.url));

export async function addSdkMetadataField(wasmPath, usingAOT) {
  const packageJson = await readFile(join(__dirname, '../package.json'), {
    encoding: 'utf-8',
  });

  let { name, version } = JSON.parse(packageJson);

  if (usingAOT) {
    name += ' (StarlingMonkey with Weval)';
  } else {
    name += ' (StarlingMonkey)';
  }

  const metadata = [['sdk', [[`${name}`, version]]]];
  const wasm = await readFile(wasmPath);
  const newWasm = await metadataAdd(wasm, metadata);
  await writeFile(wasmPath, newWasm);
}