@netlify/plugin-edge-handlers/src/cli.js

Netlify Build plugin to bundle Edge functions

#!/usr/bin/env node

const path = require("path");

const { isDirectory } = require("path-type");

const { assemble, bundleFunctionsForCli } = require("./lib");

const build = async ({ EDGE_HANDLERS_SRC }) => {
  const srcDir = path.resolve(EDGE_HANDLERS_SRC);

  if (!(await isDirectory(srcDir))) {
    console.log(
      JSON.stringify({
        code: "directory-not-found",
        dir: srcDir,
        success: false,
      }),
    );
    return;
  }

  let mainFile;
  let handlers;
  try {
    const result = await assemble(srcDir);
    mainFile = result.mainFile;
    handlers = result.handlers;
  } catch (err) {
    console.log(
      JSON.stringify({
        code: "unknown",
        msg: `Failed discovering Edge Handlers: ${err.message}`,
        success: false,
      }),
    );
    return;
  }

  if (handlers.length === 0) {
    console.log(JSON.stringify({ bundle: null, bundled: srcDir, handlers: [], success: true }));
    return;
  }

  try {
    const bundle = await bundleFunctionsForCli(mainFile);
    console.log(JSON.stringify({ bundle, bundled: srcDir, handlers, success: true }));
  } catch (err) {
    console.log(JSON.stringify(err));
  }
};

const main = async () => {
  const [, bin, command, EDGE_HANDLERS_SRC] = process.argv;

  const USAGE = `Usage: ${bin} build <Edge Handlers directory>`;

  if (command !== "build") {
    console.log(
      JSON.stringify({
        code: "cli",
        msg: `'${command}' is not a valid CLI command\n\n${USAGE}`,
        success: false,
      }),
    );
    return;
  } else if (!EDGE_HANDLERS_SRC) {
    console.log(
      JSON.stringify({
        code: "cli",
        msg: `You must specify the Edge Handlers source directory\n\n${USAGE}`,
        success: false,
      }),
    );
    return;
  }

  await build({ EDGE_HANDLERS_SRC });
};

main();