Provide workaround if running without ESM support

bin/html-tty

@@ -1,7 +1,7 @@
 #!/usr/bin/env node
 "use strict";
 
-new Promise(resolve => {
+require("../lib/adapters/esm.js")(() => new Promise(resolve => {
  const fs = require("fs");
  if(process.argv[2])
  resolve(fs.readFileSync(process.argv[2], "utf8"));
@@ -38,4 +38,4 @@ new Promise(resolve => {
 }).catch(error => {
  console.error(error);
  process.exit(1);
-});
+}));

lib/adapters/esm.js

@@ -0,0 +1,38 @@
+/**
+ * Hack for executables needing an entry-point into an ESM graph.
+ *
+ * Executes the given handler only if the current process appears
+ * to be running with ESM support enabled. Otherwise, a new process
+ * is forked with Node's `--experimental-modules` flag set.
+ *
+ * @param {Function} handler
+ * @internal
+ */
+module.exports = handler => {
+ "use strict";
+
+ // Raise an exception for Node versions older than v8.5.0
+ const [major, minor] = process.version.replace(/^\v/, "").split(".").map(Number);
+ if(major < 8 || 8 === major && minor < 5){
+ console.error("This program requires Node.js v8.5.0 or later.");
+ process.exit(1);
+ }
+
+ // ESM support enabled
+ const opts = (process.env.NODE_OPTIONS || "").split(/\s+/).filter(Boolean);
+ if(-1 !== opts.indexOf("--experimental-modules"))
+ return handler();
+
+ // ESM unsupported; perform a hacky workaround
+ const {spawn} = require("child_process");
+ const proc = spawn("node", process.argv.slice(1), {
+ stdio: ["inherit", "inherit", "pipe"],
+ env: Object.assign({}, process.env, {
+ NODE_OPTIONS: (process.env.NODE_OPTIONS || "") + " --experimental-modules",
+ }),
+ });
+ proc.stderr.on("data", data => {
+ data = String(data).replace(/^.*ExperimentalWarning: The ESM module loader is experimental.*\n/m, "");
+ process.stderr.write(data);
+ });
+};

package.json

@@ -19,7 +19,7 @@
  },
  "engines": {
  "atom": ">=1.19.0",
- "node": ">=7.6.0",
+ "node": ">=8.5.0",
  "electron": ">=1.6.0",
  "chrome": ">=55",
  "edge": ">=15",