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denoland-deno/js/main.ts
Ryan Dahl c113df1bb8
Process source maps in Rust instead of JS (#1280)
- Improves speed and binary size significantly.
- Makes deno_last_exception() output a JSON structure.
- Isolate::execute and Isolate::event_loop now return
  structured, mapped JSError objects on errors.
- Removes libdeno functions:
  libdeno.setGlobalErrorHandler()
  libdeno.setPromiseRejectHandler()
  libdeno.setPromiseErrorExaminer()

In collaboration with Ryan Dahl.
2018-12-06 23:05:36 -05:00

75 lines
2.2 KiB
TypeScript

// Copyright 2018 the Deno authors. All rights reserved. MIT license.
// We need to make sure this module loads, for its side effects.
import "./globals";
import * as flatbuffers from "./flatbuffers";
import * as msg from "gen/msg_generated";
import { assert, log, setLogDebug } from "./util";
import * as os from "./os";
import { Compiler } from "./compiler";
import { Runner } from "./runner";
import { libdeno } from "./libdeno";
import { args } from "./deno";
import { sendSync, handleAsyncMsgFromRust } from "./dispatch";
import { replLoop } from "./repl";
import { version } from "typescript";
function sendStart(): msg.StartRes {
const builder = flatbuffers.createBuilder();
msg.Start.startStart(builder);
const startOffset = msg.Start.endStart(builder);
const baseRes = sendSync(builder, msg.Any.Start, startOffset);
assert(baseRes != null);
assert(msg.Any.StartRes === baseRes!.innerType());
const startRes = new msg.StartRes();
assert(baseRes!.inner(startRes) != null);
return startRes;
}
/* tslint:disable-next-line:no-default-export */
export default function denoMain() {
libdeno.recv(handleAsyncMsgFromRust);
// First we send an empty "Start" message to let the privileged side know we
// are ready. The response should be a "StartRes" message containing the CLI
// args and other info.
const startResMsg = sendStart();
setLogDebug(startResMsg.debugFlag());
const compiler = Compiler.instance();
// handle `--types`
if (startResMsg.typesFlag()) {
const defaultLibFileName = compiler.getDefaultLibFileName();
console.log(compiler.getSource(defaultLibFileName));
os.exit(0);
}
// handle `--version`
if (startResMsg.versionFlag()) {
console.log("deno:", startResMsg.denoVersion());
console.log("v8:", startResMsg.v8Version());
console.log("typescript:", version);
os.exit(0);
}
const cwd = startResMsg.cwd();
log("cwd", cwd);
for (let i = 1; i < startResMsg.argvLength(); i++) {
args.push(startResMsg.argv(i));
}
log("args", args);
Object.freeze(args);
const inputFn = args[0];
compiler.recompile = startResMsg.recompileFlag();
const runner = new Runner(compiler);
if (inputFn) {
runner.run(inputFn, `${cwd}/`);
} else {
replLoop();
}
}