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util.ts
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util.ts
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// If you use the eval function indirectly, by invoking it via a reference
// other than eval, as of ECMAScript 5 it works in the global scope rather than
// the local scope. This means, for instance, that function declarations create
// global functions, and that the code being evaluated doesn't have access to
// local variables within the scope where it's being called.
export const globalEval = eval;
// A reference to the global object.
const _global = globalEval("this");
const print = V8Worker2.print;
// To control internal logging output
const debug = true;
// Internal logging for deno. Use the "debug" variable above to control
// output.
// tslint:disable-next-line:no-any
export function log(...args: any[]): void {
if (debug) {
console.log(...args);
}
}
_global["console"] = {
// tslint:disable-next-line:no-any
log(...args: any[]): void {
print(stringifyArgs(args));
},
// tslint:disable-next-line:no-any
error(...args: any[]): void {
print("ERROR: " + stringifyArgs(args));
}
};
// tslint:disable-next-line:no-any
function stringifyArgs(args: any[]): string {
const out: string[] = [];
for (const a of args) {
if (typeof a === "string") {
out.push(a);
} else {
out.push(JSON.stringify(a));
}
}
return out.join(" ");
}
export function assert(cond: boolean, msg = "") {
if (!cond) {
throw Error("Assertion failed. " + msg);
}
}