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LibJS: Implement non standard error.stack attribute

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All other browser already support this feature.
There is a Stage 1 proposal to standardize this, but it does not seem
to be active.
This commit is contained in:
Hendiadyoin1 2022-02-06 17:00:28 +01:00 • committed by Linus Groh
parent 8c3942d90c
commit 89c82abf1f
6 changed files with 100 additions and 0 deletions
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28
Userland/Libraries/LibJS/Tests/error-stack.js Normal file
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test("Anonymous function", function () {
let stackString = (() => {
return Error();
})().stack;
let [header, ...stackFrames] = stackString.split("\n");
expect(header).toBe("Error");
expect(!!stackFrames[0].match(/^ at Error \(.*\/error-stack\.js:3:\d+\)$/)).toBeTrue();
expect(!!stackFrames[1].match(/^ at .*\/error-stack\.js:3:\d+$/)).toBeTrue();
expect(!!stackFrames[2].match(/^ at .*\/error-stack\.js:2:\d+$/)).toBeTrue();
});
test("Named function with message", function () {
function f() {
throw Error("You Shalt Not Pass!");
}
try {
f();
} catch (e) {
let stackString = e.stack;
let [header, ...stack_frames] = stackString.split("\n");
expect(header).toBe("Error: You Shalt Not Pass!");
expect(!!stack_frames[0].match(/^ at Error \(.*\/error-stack\.js:15:\d+\)$/)).toBeTrue();
expect(!!stack_frames[1].match(/^ at f \(.*\/error-stack\.js:15:\d+\)$/)).toBeTrue();
expect(!!stack_frames[2].match(/^ at .*\/error-stack\.js:18:\d+$/)).toBeTrue();
}
});