feat(dsl)!: support other JS runtimes

[ObserverOfTime]

Problem

The generate command currently only supports Node out of the box and Bun via a shim that calls bun -.

Solution

• Replace the Node-specific global with the universal globalThis.
• Replace the Node-specific require() with the universal await import().
  • This also adds support for ES modules but no longer works in Node out of the box.
• Adapt the environment & stdout functions depending on the runtime.
• Set the required arguments for known runtimes (Node, Bun, Deno).
  • The user can still specify a different command or the full path for custom runtimes.

Notes

• In Deno, the DSL only needs --allow-env --allow-read but we use --allow-all since grammars may need more.
  • The other runtimes are not restrictive anyway.
• QuickJS does not support reading input from stdin at the moment.
• MozJS does not support reading input from stdin as a module at the moment.

[ObserverOfTime]

We could also support QuickJS & MozJS by writing a temporary file, but loading node modules (if needed) would be tricky.

[ObserverOfTime]

Cross does not seem to support --input-type. Is it using a version of Node older than 12.0?

Windows is, as usual, weird:

 TypeError [ERR_INVALID_MODULE_SPECIFIER]: Invalid module "\\?\D:\a\tree-sitter\tree-sitter\test\fixtures\test_grammars\uses_current_column\grammar.js" is not a valid package name imported from D:\a\tree-sitter\tree-sitter\cli\[eval1]

[ObserverOfTime]

Is it using a version of Node older than 12.0?

Right, of course it is… Surely cross-rs/cross#973 will be merged soon…

[ObserverOfTime]

Note to self: add these back if QuickJS and MozJS are ever supported.

--- a/cli/src/generate/dsl.js
+++ b/cli/src/generate/dsl.js
@@ -459,6 +459,8 @@ function checkPrecedence(value) {
 function getEnv(name) {
   if (globalThis.process) return process.env[name]; // Node/Bun
   if (globalThis.Deno) return Deno.env.get(name); // Deno
+  if (globalThis.std) return std.getenv(name); // QuickJS
+  if (globalThis.os?.getenv) return os.getenv(name); // MozJS
   throw Error("Unsupported JS runtime");
 }
 
@@ -482,6 +484,10 @@ if (globalThis.process) { // Node/Bun
   process.stdout.write(output);
 } else if (globalThis.Deno) { // Deno
   Deno.stdout.writeSync(new TextEncoder().encode(output));
+} else if (globalThis.std) { // QuickJS
+  std.out.puts(output);
+} else if (globalThis.putstr) { // MozJS
+  putstr(output);
 } else {
   throw Error("Unsupported JS runtime");
 }