57 lines
2.5 KiB
JavaScript
57 lines
2.5 KiB
JavaScript
|
"use strict";
|
||
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
||
|
|
exports.sdkStreamMixin = void 0;
|
||
|
|
const node_http_handler_1 = require("@smithy/node-http-handler");
|
||
|
|
const util_buffer_from_1 = require("@smithy/util-buffer-from");
|
||
|
|
const stream_1 = require("stream");
|
||
|
|
const util_1 = require("util");
|
||
|
|
const sdk_stream_mixin_browser_1 = require("./sdk-stream-mixin.browser");
|
||
|
|
const ERR_MSG_STREAM_HAS_BEEN_TRANSFORMED = "The stream has already been transformed.";
|
||
|
|
const sdkStreamMixin = (stream) => {
|
||
|
|
var _a, _b;
|
||
|
|
if (!(stream instanceof stream_1.Readable)) {
|
||
|
|
try {
|
||
|
|
return (0, sdk_stream_mixin_browser_1.sdkStreamMixin)(stream);
|
||
|
|
}
|
||
|
|
catch (e) {
|
||
|
|
const name = ((_b = (_a = stream === null || stream === void 0 ? void 0 : stream.__proto__) === null || _a === void 0 ? void 0 : _a.constructor) === null || _b === void 0 ? void 0 : _b.name) || stream;
|
||
|
|
throw new Error(`Unexpected stream implementation, expect Stream.Readable instance, got ${name}`);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
let transformed = false;
|
||
|
|
const transformToByteArray = async () => {
|
||
|
|
if (transformed) {
|
||
|
|
throw new Error(ERR_MSG_STREAM_HAS_BEEN_TRANSFORMED);
|
||
|
|
}
|
||
|
|
transformed = true;
|
||
|
|
return await (0, node_http_handler_1.streamCollector)(stream);
|
||
|
|
};
|
||
|
|
return Object.assign(stream, {
|
||
|
|
transformToByteArray,
|
||
|
|
transformToString: async (encoding) => {
|
||
|
|
const buf = await transformToByteArray();
|
||
|
|
if (encoding === undefined || Buffer.isEncoding(encoding)) {
|
||
|
|
return (0, util_buffer_from_1.fromArrayBuffer)(buf.buffer, buf.byteOffset, buf.byteLength).toString(encoding);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
const decoder = new util_1.TextDecoder(encoding);
|
||
|
|
return decoder.decode(buf);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
transformToWebStream: () => {
|
||
|
|
if (transformed) {
|
||
|
|
throw new Error(ERR_MSG_STREAM_HAS_BEEN_TRANSFORMED);
|
||
|
|
}
|
||
|
|
if (stream.readableFlowing !== null) {
|
||
|
|
throw new Error("The stream has been consumed by other callbacks.");
|
||
|
|
}
|
||
|
|
if (typeof stream_1.Readable.toWeb !== "function") {
|
||
|
|
throw new Error("Readable.toWeb() is not supported. Please make sure you are using Node.js >= 17.0.0, or polyfill is available.");
|
||
|
|
}
|
||
|
|
transformed = true;
|
||
|
|
return stream_1.Readable.toWeb(stream);
|
||
|
|
},
|
||
|
|
});
|
||
|
|
};
|
||
|
|
exports.sdkStreamMixin = sdkStreamMixin;
|