surma
d44f1d9677
Checkpoint before integration and package validation. Assisted-by: SurmAgent:unknown [read] [edit] [bash]
31 lines
867 B
JavaScript
31 lines
867 B
JavaScript
import { assert } from "./assert.js";
|
|
|
|
/* CallSite.prototype.isConstructor reports whether the frame was invoked as a
|
|
constructor (via `new`). */
|
|
|
|
let frames;
|
|
Error.prepareStackTrace = (_, f) => { frames = f; return f; };
|
|
|
|
function Thing() { void new Error(""); }
|
|
new Thing();
|
|
|
|
function plain() { void new Error(""); }
|
|
plain();
|
|
|
|
Error.prepareStackTrace = undefined;
|
|
|
|
// after plain(): frame 0 is plain (not a constructor)
|
|
assert(frames[0].getFunctionName(), "plain");
|
|
assert(!frames[0].isConstructor());
|
|
|
|
// re-run for the constructor case
|
|
Error.prepareStackTrace = (_, f) => { frames = f; return f; };
|
|
new Thing();
|
|
Error.prepareStackTrace = undefined;
|
|
|
|
// frame 0 is Thing, invoked via `new`
|
|
assert(frames[0].getFunctionName(), "Thing");
|
|
assert(frames[0].isConstructor());
|
|
// its caller (module top level) is not a constructor
|
|
assert(!frames[1].isConstructor());
|