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Chris Tate
d8f3565ac4
A write completion callback that a JavaScript module returned reaches the stream lowering as an untyped value. Since the error-argument form of write callbacks, the lowering refused it with SC2020, so tests/corpus/8532-stream-saved-callback-receiver failed to compile. Such a callback is now converted to a function of the error argument. The stream calls it unbound with null after a successful write or with the write's error, and ignores what it returns, as Node does.
12 lines
447 B
JavaScript
12 lines
447 B
JavaScript
// A write completion callback built in JavaScript: it records how it was
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// called. Module code is strict, so an unbound call sees `this` undefined.
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export function makeReporter(lines, label) {
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return function (...args) {
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const error = args[0];
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lines.push(
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`${label} args=${args.length} error=${error === null ? "null" : error === undefined ? "undefined" : error.message} this=${typeof this}`,
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);
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return "ignored";
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};
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}
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