36 lines
969 B
JavaScript
36 lines
969 B
JavaScript
|
/* global TransformStream ReadableStream */
|
||
|
|
import { createReadableStreamWrapper } from '@mattiasbuelens/web-streams-adapter';
|
||
|
|
import {
|
||
|
|
TransformStream as TransformStreamPony,
|
||
|
|
ReadableStream as ReadableStreamPony
|
||
|
|
} from 'web-streams-ponyfill';
|
||
|
|
|
||
|
|
const toNativeReadable = createReadableStreamWrapper(ReadableStream);
|
||
|
|
const toPonyReadable = createReadableStreamWrapper(ReadableStreamPony);
|
||
|
|
|
||
|
|
export let TStream;
|
||
|
|
if (typeof TransformStream === 'function') {
|
||
|
|
TStream = TransformStream;
|
||
|
|
} else {
|
||
|
|
TStream = TransformStreamPony;
|
||
|
|
TStream.prototype.isPony = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
export let RStream = ReadableStream;
|
||
|
|
try {
|
||
|
|
new ReadableStream().pipeThrough(new TransformStream());
|
||
|
|
} catch (e) {
|
||
|
|
RStream = ReadableStreamPony;
|
||
|
|
RStream.prototype.isPony = true;
|
||
|
|
RStream.prototype.toNative = function() {
|
||
|
|
return toNativeReadable(this);
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
export function wrapReadable(stream) {
|
||
|
|
if (RStream === ReadableStream) {
|
||
|
|
return stream;
|
||
|
|
}
|
||
|
|
return toPonyReadable(stream);
|
||
|
|
}
|