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denoland-deno/cli/tsc/06_util.js
2020-07-23 15:29:36 +02:00

59 lines
1.2 KiB
JavaScript

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
((window) => {
const core = Deno.core;
let logDebug = false;
let logSource = "JS";
function setLogDebug(debug, source) {
logDebug = debug;
if (source) {
logSource = source;
}
}
function log(...args) {
if (logDebug) {
const stringifiedArgs = args.map(JSON.stringify).join(" ");
core.print(`DEBUG ${logSource} - ${stringifiedArgs}\n`);
}
}
class AssertionError extends Error {
constructor(msg) {
super(msg);
this.name = "AssertionError";
}
}
function assert(cond, msg = "Assertion failed.") {
if (!cond) {
throw new AssertionError(msg);
}
}
function createResolvable() {
let resolve;
let reject;
const promise = new Promise((res, rej) => {
resolve = res;
reject = rej;
});
promise.resolve = resolve;
promise.reject = reject;
return promise;
}
function notImplemented() {
throw new Error("not implemented");
}
window.__bootstrap.util = {
log,
setLogDebug,
notImplemented,
createResolvable,
assert,
AssertionError,
};
})(this);