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Add ducktyped Promise checks (fixes #472)

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Vanilagy
2026-08-26 11:24:24 +02:00
parent 0f9dc1f91b
commit 14fb7d0119
19 changed files with 162 additions and 128 deletions
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src/reader.ts
+4 -4
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@@ -7,7 +7,7 @@
*/
import { InputDisposedError } from './input';
import { assert, clamp, getUint24, MaybePromise, textDecoder, toDataView } from './misc';
import { assert, clamp, getUint24, isThenable, MaybePromise, textDecoder, toDataView } from './misc';
import { DEFAULT_MAX_READ_POSITION, DEFAULT_MIN_READ_POSITION, Source } from './source';
export class Reader {
@@ -47,7 +47,7 @@ export class Reader {
const end = start + length;
const result = this.source._read(start, end, DEFAULT_MIN_READ_POSITION, DEFAULT_MAX_READ_POSITION);
if (result instanceof Promise) {
if (isThenable(result)) {
return result.then((x) => {
if (!x) {
return null;
@@ -95,7 +95,7 @@ export class Reader {
);
};
if (promisedAttempt instanceof Promise) {
if (isThenable(promisedAttempt)) {
return promisedAttempt.then(handleAttempt);
} else {
return handleAttempt(promisedAttempt);
@@ -121,7 +121,7 @@ export class Reader {
}
let slice = this.requestSliceRange(currentSize, 0, CHUNK_SIZE);
if (slice instanceof Promise) slice = await slice;
if (isThenable(slice)) slice = await slice;
if (!slice || slice.length === 0) {
break;