@respeecher/respeecher-js
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JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __asyncValues = (this && this.__asyncValues) || function (o) {
if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined.");
var m = o[Symbol.asyncIterator], i;
return m ? m.call(o) : (o = typeof __values === "function" ? __values(o) : o[Symbol.iterator](), i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i);
function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }
function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }
};
var __await = (this && this.__await) || function (v) { return this instanceof __await ? (this.v = v, this) : new __await(v); }
var __asyncGenerator = (this && this.__asyncGenerator) || function (thisArg, _arguments, generator) {
if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined.");
var g = generator.apply(thisArg, _arguments || []), i, q = [];
return i = Object.create((typeof AsyncIterator === "function" ? AsyncIterator : Object).prototype), verb("next"), verb("throw"), verb("return", awaitReturn), i[Symbol.asyncIterator] = function () { return this; }, i;
function awaitReturn(f) { return function (v) { return Promise.resolve(v).then(f, reject); }; }
function verb(n, f) { if (g[n]) { i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; if (f) i[n] = f(i[n]); } }
function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }
function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }
function fulfill(value) { resume("next", value); }
function reject(value) { resume("throw", value); }
function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Stream = void 0;
exports.readableStreamAsyncIterable = readableStreamAsyncIterable;
const index_js_1 = require("../runtime/index.js");
const DATA_PREFIX = "data:";
class Stream {
constructor({ stream, parse, eventShape, signal }) {
this.controller = new AbortController();
this.stream = stream;
this.parse = parse;
if (eventShape.type === "sse") {
this.prefix = DATA_PREFIX;
this.messageTerminator = "\n";
this.streamTerminator = eventShape.streamTerminator;
}
else {
this.messageTerminator = eventShape.messageTerminator;
}
signal === null || signal === void 0 ? void 0 : signal.addEventListener("abort", () => this.controller.abort());
}
iterMessages() {
return __asyncGenerator(this, arguments, function* iterMessages_1() {
var _a, e_1, _b, _c;
this.controller.signal;
const stream = readableStreamAsyncIterable(this.stream);
let buf = "";
let prefixSeen = false;
try {
for (var _d = true, stream_1 = __asyncValues(stream), stream_1_1; stream_1_1 = yield __await(stream_1.next()), _a = stream_1_1.done, !_a; _d = true) {
_c = stream_1_1.value;
_d = false;
const chunk = _c;
buf += this.decodeChunk(chunk);
let terminatorIndex;
while ((terminatorIndex = buf.indexOf(this.messageTerminator)) >= 0) {
let line = buf.slice(0, terminatorIndex + 1);
buf = buf.slice(terminatorIndex + this.messageTerminator.length);
if (!line.trim()) {
continue;
}
if (!prefixSeen && this.prefix != null) {
const prefixIndex = line.indexOf(this.prefix);
if (prefixIndex === -1) {
continue;
}
prefixSeen = true;
line = line.slice(prefixIndex + this.prefix.length);
}
if (this.streamTerminator != null && line.includes(this.streamTerminator)) {
return yield __await(void 0);
}
const message = yield __await(this.parse(JSON.parse(line)));
yield yield __await(message);
prefixSeen = false;
}
}
}
catch (e_1_1) { e_1 = { error: e_1_1 }; }
finally {
try {
if (!_d && !_a && (_b = stream_1.return)) yield __await(_b.call(stream_1));
}
finally { if (e_1) throw e_1.error; }
}
});
}
[Symbol.asyncIterator]() {
return __asyncGenerator(this, arguments, function* _a() {
var _b, e_2, _c, _d;
try {
for (var _e = true, _f = __asyncValues(this.iterMessages()), _g; _g = yield __await(_f.next()), _b = _g.done, !_b; _e = true) {
_d = _g.value;
_e = false;
const message = _d;
yield yield __await(message);
}
}
catch (e_2_1) { e_2 = { error: e_2_1 }; }
finally {
try {
if (!_e && !_b && (_c = _f.return)) yield __await(_c.call(_f));
}
finally { if (e_2) throw e_2.error; }
}
});
}
decodeChunk(chunk) {
let decoded = "";
// If TextDecoder is present, use it
if (typeof TextDecoder !== "undefined") {
const decoder = new TextDecoder("utf8");
decoded += decoder.decode(chunk);
}
// Buffer is present in Node.js environment
else if (index_js_1.RUNTIME.type === "node" && typeof chunk !== "undefined") {
decoded += Buffer.isBuffer(chunk) ? chunk : Buffer.from(chunk);
}
return decoded;
}
}
exports.Stream = Stream;
/**
* Browser polyfill for ReadableStream
*/
// eslint-disable-next-line @typescript-eslint/no-explicit-any
function readableStreamAsyncIterable(stream) {
if (stream[Symbol.asyncIterator]) {
return stream;
}
const reader = stream.getReader();
return {
next() {
return __awaiter(this, void 0, void 0, function* () {
try {
const result = yield reader.read();
if (result === null || result === void 0 ? void 0 : result.done) {
reader.releaseLock();
} // release lock when stream becomes closed
return result;
}
catch (e) {
reader.releaseLock(); // release lock when stream becomes errored
throw e;
}
});
},
return() {
return __awaiter(this, void 0, void 0, function* () {
const cancelPromise = reader.cancel();
reader.releaseLock();
yield cancelPromise;
return { done: true, value: undefined };
});
},
[Symbol.asyncIterator]() {
return this;
},
};
}