@picovoice/orca-web
Version:
Orca Text-to-Speech engine for web browsers (via WebAssembly)
1,342 lines (1,283 loc) • 11.1 MB
JavaScript
function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
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var info = gen[key](arg);
var value = info.value;
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reject(error);
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function _asyncToGenerator(fn) {
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args = arguments;
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define({}, "");
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a = Object.create(i.prototype),
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function tryCatch(t, e, r) {
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type: "normal",
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arg: t
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e.wrap = wrap;
var h = "suspendedStart",
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f = "executing",
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y = {};
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define(p, a, function () {
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v && v !== r && n.call(v, a) && (p = v);
var g = GeneratorFunctionPrototype.prototype = Generator.prototype = Object.create(p);
function defineIteratorMethods(t) {
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define(t, e, function (t) {
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function AsyncIterator(t, e) {
function invoke(r, o, i, a) {
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h = u.value;
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u.value = t, i(u);
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a(c.arg);
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var r;
o(this, "_invoke", {
value: function value(t, n) {
function callInvokeWithMethodAndArg() {
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invoke(t, n, e, r);
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});
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function makeInvokeMethod(e, r, n) {
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if (o === s) {
if ("throw" === i) throw a;
return {
value: t,
done: !0
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}
function pushTryEntry(t) {
var e = {
tryLoc: t[0]
};
1 in t && (e.catchLoc = t[1]), 2 in t && (e.finallyLoc = t[2], e.afterLoc = t[3]), this.tryEntries.push(e);
}
function resetTryEntry(t) {
var e = t.completion || {};
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function Context(t) {
this.tryEntries = [{
tryLoc: "root"
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function values(e) {
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var r = e[a];
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if (!isNaN(e.length)) {
var o = -1,
i = function next() {
for (; ++o < e.length;) if (n.call(e, o)) return next.value = e[o], next.done = !1, next;
return next.value = t, next.done = !0, next;
};
return i.next = i;
}
}
throw new TypeError(_typeof(e) + " is not iterable");
}
return GeneratorFunction.prototype = GeneratorFunctionPrototype, o(g, "constructor", {
value: GeneratorFunctionPrototype,
configurable: !0
}), o(GeneratorFunctionPrototype, "constructor", {
value: GeneratorFunction,
configurable: !0
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var e = "function" == typeof t && t.constructor;
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};
}, defineIteratorMethods(AsyncIterator.prototype), define(AsyncIterator.prototype, c, function () {
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stop: function stop() {
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var t = this.tryEntries[0].completion;
if ("throw" === t.type) throw t.arg;
return this.rval;
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dispatchException: function dispatchException(e) {
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var r = this;
function handle(n, o) {
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complete: function complete(t, e) {
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var r = this.tryEntries[e];
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var n = r.completion;
if ("throw" === n.type) {
var o = n.arg;
resetTryEntry(r);
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return o;
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throw new Error("illegal catch attempt");
},
delegateYield: function delegateYield(e, r, n) {
return this.delegate = {
iterator: values(e),
resultName: r,
nextLoc: n
}, "next" === this.method && (this.arg = t), y;
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module.exports = _regeneratorRuntime, module.exports.__esModule = true, module.exports["default"] = module.exports;
} (regeneratorRuntime$2));
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// TODO(Babel 8): Remove this file.
var runtime$1 = regeneratorRuntimeExports$1();
var regenerator$1 = runtime$1;
// Copied from https://github.com/facebook/regenerator/blob/main/packages/runtime/runtime.js#L736=
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regeneratorRuntime = runtime$1;
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const E_CANCELED = new Error('request for lock canceled');
var __awaiter$2 = 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());
});
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class Semaphore {
constructor(_value, _cancelError = E_CANCELED) {
this._value = _value;
this._cancelError = _cancelError;
this._weightedQueues = [];
this._weightedWaiters = [];
}
acquire(weight = 1) {
if (weight <= 0)
throw new Error(`invalid weight ${weight}: must be positive`);
return new Promise((resolve, reject) => {
if (!this._weightedQueues[weight - 1])
this._weightedQueues[weight - 1] = [];
this._weightedQueues[weight - 1].push({ resolve, reject });
this._dispatch();
});
}
runExclusive(callback, weight = 1) {
return __awaiter$2(this, void 0, void 0, function* () {
const [value, release] = yield this.acquire(weight);
try {
return yield callback(value);
}
finally {
release();
}
});
}
waitForUnlock(weight = 1) {
if (weight <= 0)
throw new Error(`invalid weight ${weight}: must be positive`);
return new Promise((resolve) => {
if (!this._weightedWaiters[weight - 1])
this._weightedWaiters[weight - 1] = [];
this._weightedWaiters[weight - 1].push(resolve);
this._dispatch();
});
}
isLocked() {
return this._value <= 0;
}
getValue() {
return this._value;
}
setValue(value) {
this._value = value;
this._dispatch();
}
release(weight = 1) {
if (weight <= 0)
throw new Error(`invalid weight ${weight}: must be positive`);
this._value += weight;
this._dispatch();
}
cancel() {
this._weightedQueues.forEach((queue) => queue.forEach((entry) => entry.reject(this._cancelError)));
this._weightedQueues = [];
}
_dispatch() {
var _a;
for (let weight = this._value; weight > 0; weight--) {
const queueEntry = (_a = this._weightedQueues[weight - 1]) === null || _a === void 0 ? void 0 : _a.shift();
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continue;
const previousValue = this._value;
const previousWeight = weight;
this._value -= weight;
weight = this._value + 1;
queueEntry.resolve([previousValue, this._newReleaser(previousWeight)]);
}
this._drainUnlockWaiters();
}
_newReleaser(weight) {
let called = false;
return () => {
if (called)
return;
called = true;
this.release(weight);
};
}
_drainUnlockWaiters() {
for (let weight = this._value; weight > 0; weight--) {
if (!this._weightedWaiters[weight - 1])
continue;
this._weightedWaiters[weight - 1].forEach((waiter) => waiter());
this._weightedWaiters[weight - 1] = [];
}
}
}
var __awaiter$1 = 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());
});
};
class Mutex {
constructor(cancelError) {
this._semaphore = new Semaphore(1, cancelError);
}
acquire() {
return __awaiter$1(this, void 0, void 0, function* () {
const [, releaser] = yield this._semaphore.acquire();
return releaser;
});
}
runExclusive(callback) {
return this._semaphore.runExclusive(() => callback());
}
isLocked() {
return this._semaphore.isLocked();
}
waitForUnlock() {
return this._semaphore.waitForUnlock();
}
release() {
if (this._semaphore.isLocked())
this._semaphore.release();
}
cancel() {
return this._semaphore.cancel();
}
}
const simd=async()=>WebAssembly.validate(new Uint8Array([0,97,115,109,1,0,0,0,1,5,1,96,0,1,123,3,2,1,0,10,10,1,8,0,65,0,253,15,253,98,11]));
function getDefaultExportFromCjs (x) {
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var regeneratorRuntime$1 = {exports: {}};
var _typeof$1 = {exports: {}};
_typeof$1.exports;
(function (module) {
function _typeof(o) {
"@babel/helpers - typeof";
return (module.exports = _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) {
return typeof o;
} : function (o) {
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var _typeofExports = _typeof$1.exports;
regeneratorRuntime$1.exports;
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function _regeneratorRuntime() {
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var t,
e = {},
r = Object.prototype,
n = r.hasOwnProperty,
o = Object.defineProperty || function (t, e, r) {
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i = "function" == typeof Symbol ? Symbol : {},
a = i.iterator || "@@iterator",
c = i.asyncIterator || "@@asyncIterator",
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function define(t, e, r) {
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enumerable: !0,
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try {
define({}, "");
} catch (t) {
define = function define(t, e, r) {
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}
function wrap(t, e, r, n) {
var i = e && e.prototype instanceof Generator ? e : Generator,
a = Object.create(i.prototype),
c = new Context(n || []);
return o(a, "_invoke", {
value: makeInvokeMethod(t, r, c)
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function tryCatch(t, e, r) {
try {
return {
type: "normal",
arg: t.call(e, r)
};
} catch (t) {
return {
type: "throw",
arg: t
};
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e.wrap = wrap;
var h = "suspendedStart",
l = "suspendedYield",
f = "executing",
s = "completed",
y = {};
function Generator() {}
function GeneratorFunction() {}
function GeneratorFunctionPrototype() {}
var p = {};
define(p, a, function () {
return this;
});
var d = Object.getPrototypeOf,
v = d && d(d(values([])));
v && v !== r && n.call(v, a) && (p = v);
var g = GeneratorFunctionPrototype.prototype = Generator.prototype = Object.create(p);
function defineIteratorMethods(t) {
["next", "throw", "return"].forEach(function (e) {
define(t, e, function (t) {
return this._invoke(e, t);
});
});
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function AsyncIterator(t, e) {
function invoke(r, o, i, a) {
var c = tryCatch(t[r], t, o);
if ("throw" !== c.type) {
var u = c.arg,
h = u.value;
return h && "object" == _typeof(h) && n.call(h, "__await") ? e.resolve(h.__await).then(function (t) {
invoke("next", t, i, a);
}, function (t) {
invoke("throw", t, i, a);
}) : e.resolve(h).then(function (t) {
u.value = t, i(u);
}, function (t) {
return invoke("throw", t, i, a);
});
}
a(c.arg);
}
var r;
o(this, "_invoke", {
value: function value(t, n) {
function callInvokeWithMethodAndArg() {
return new e(function (e, r) {
invoke(t, n, e, r);
});
}
return r = r ? r.then(callInvokeWithMethodAndArg, callInvokeWithMethodAndArg) : callInvokeWithMethodAndArg();
}
});
}
function makeInvokeMethod(e, r, n) {
var o = h;
return function (i, a) {
if (o === f) throw new Error("Generator is already running");
if (o === s) {
if ("throw" === i) throw a;
return {
value: t,
done: !0
};
}
for (n.method = i, n.arg = a;;) {
var c = n.delegate;
if (c) {
var u = maybeInvokeDelegate(c, n);
if (u) {
if (u === y) continue;
return u;
}
}
if ("next" === n.method) n.sent = n._sent = n.arg;else if ("throw" === n.method) {
if (o === h) throw o = s, n.arg;
n.dispatchException(n.arg);
} else "return" === n.method && n.abrupt("return", n.arg);
o = f;
var p = tryCatch(e, r, n);
if ("normal" === p.type) {
if (o = n.done ? s : l, p.arg === y) continue;
return {
value: p.arg,
done: n.done
};
}
"throw" === p.type && (o = s, n.method = "throw", n.arg = p.arg);
}
};
}
function maybeInvokeDelegate(e, r) {
var n = r.method,
o = e.iterator[n];
if (o === t) return r.delegate = null, "throw" === n && e.iterator["return"] && (r.method = "return", r.arg = t, maybeInvokeDelegate(e, r), "throw" === r.method) || "return" !== n && (r.method = "throw", r.arg = new TypeError("The iterator does not provide a '" + n + "' method")), y;
var i = tryCatch(o, e.iterator, r.arg);
if ("throw" === i.type) return r.method = "throw", r.arg = i.arg, r.delegate = null, y;
var a = i.arg;
return a ? a.done ? (r[e.resultName] = a.value, r.next = e.nextLoc, "return" !== r.method && (r.method = "next", r.arg = t), r.delegate = null, y) : a : (r.method = "throw", r.arg = new TypeError("iterator result is not an object"), r.delegate = null, y);
}
function pushTryEntry(t) {
var e = {
tryLoc: t[0]
};
1 in t && (e.catchLoc = t[1]), 2 in t && (e.finallyLoc = t[2], e.afterLoc = t[3]), this.tryEntries.push(e);
}
function resetTryEntry(t) {
var e = t.completion || {};
e.type = "normal", delete e.arg, t.completion = e;
}
function Context(t) {
this.tryEntries = [{
tryLoc: "root"
}], t.forEach(pushTryEntry, this), this.reset(!0);
}
function values(e) {
if (e || "" === e) {
var r = e[a];
if (r) return r.call(e);
if ("function" == typeof e.next) return e;
if (!isNaN(e.length)) {
var o = -1,
i = function next() {
for (; ++o < e.length;) if (n.call(e, o)) return next.value = e[o], next.done = !1, next;
return next.value = t, next.done = !0, next;
};
return i.next = i;
}
}
throw new TypeError(_typeof(e) + " is not iterable");
}
return GeneratorFunction.prototype = GeneratorFunctionPrototype, o(g, "constructor", {
value: GeneratorFunctionPrototype,
configurable: !0
}), o(GeneratorFunctionPrototype, "constructor", {
value: GeneratorFunction,
configurable: !0
}), GeneratorFunction.displayName = define(GeneratorFunctionPrototype, u, "GeneratorFunction"), e.isGeneratorFunction = function (t) {
var e = "function" == typeof t && t.constructor;
return !!e && (e === GeneratorFunction || "GeneratorFunction" === (e.displayName || e.name));
}, e.mark = function (t) {
return Object.setPrototypeOf ? Object.setPrototypeOf(t, GeneratorFunctionPrototype) : (t.__proto__ = GeneratorFunctionPrototype, define(t, u, "GeneratorFunction")), t.prototype = Object.create(g), t;
}, e.awrap = function (t) {
return {
__await: t
};
}, defineIteratorMethods(AsyncIterator.prototype), define(AsyncIterator.prototype, c, function () {
return this;
}), e.AsyncIterator = AsyncIterator, e.async = function (t, r, n, o, i) {
void 0 === i && (i = Promise);
var a = new AsyncIterator(wrap(t, r, n, o), i);
return e.isGeneratorFunction(r) ? a : a.next().then(function (t) {
return t.done ? t.value : a.next();
});
}, defineIteratorMethods(g), define(g, u, "Generator"), define(g, a, function () {
return this;
}), define(g, "toString", function () {
return "[object Generator]";
}), e.keys = function (t) {
var e = Object(t),
r = [];
for (var n in e) r.push(n);
return r.reverse(), function next() {
for (; r.length;) {
var t = r.pop();
if (t in e) return next.value = t, next.done = !1, next;
}
return next.done = !0, next;
};
}, e.values = values, Context.prototype = {
constructor: Context,
reset: function reset(e) {
if (this.prev = 0, this.next = 0, this.sent = this._sent = t, this.done = !1, this.delegate = null, this.method = "next", this.arg = t, this.tryEntries.forEach(resetTryEntry), !e) for (var r in this) "t" === r.charAt(0) && n.call(this, r) && !isNaN(+r.slice(1)) && (this[r] = t);
},
stop: function stop() {
this.done = !0;
var t = this.tryEntries[0].completion;
if ("throw" === t.type) throw t.arg;
return this.rval;
},
dispatchException: function dispatchException(e) {
if (this.done) throw e;
var r = this;
function handle(n, o) {
return a.type = "throw", a.arg = e, r.next = n, o && (r.method = "next", r.arg = t), !!o;
}
for (var o = this.tryEntries.length - 1; o >= 0; --o) {
var i = this.tryEntries[o],
a = i.completion;
if ("root" === i.tryLoc) return handle("end");
if (i.tryLoc <= this.prev) {
var c = n.call(i, "catchLoc"),
u = n.call(i, "finallyLoc");
if (c && u) {
if (this.prev < i.catchLoc) return handle(i.catchLoc, !0);
if (this.prev < i.finallyLoc) return handle(i.finallyLoc);
} else if (c) {
if (this.prev < i.catchLoc) return handle(i.catchLoc, !0);
} else {
if (!u) throw new Error("try statement without catch or finally");
if (this.prev < i.finallyLoc) return handle(i.finallyLoc);
}
}
}
},
abrupt: function abrupt(t, e) {
for (var r = this.tryEntries.length - 1; r >= 0; --r) {
var o = this.tryEntries[r];
if (o.tryLoc <= this.prev && n.call(o, "finallyLoc") && this.prev < o.finallyLoc) {
var i = o;
break;
}
}
i && ("break" === t || "continue" === t) && i.tryLoc <= e && e <= i.finallyLoc && (i = null);
var a = i ? i.completion : {};
return a.type = t, a.arg = e, i ? (this.method = "next", this.next = i.finallyLoc, y) : this.complete(a);
},
complete: function complete(t, e) {
if ("throw" === t.type) throw t.arg;
return "break" === t.type || "continue" === t.type ? this.next = t.arg : "return" === t.type ? (this.rval = this.arg = t.arg, this.method = "return", this.next = "end") : "normal" === t.type && e && (this.next = e), y;
},
finish: function finish(t) {
for (var e = this.tryEntries.length - 1; e >= 0; --e) {
var r = this.tryEntries[e];
if (r.finallyLoc === t) return this.complete(r.completion, r.afterLoc), resetTryEntry(r), y;
}
},
"catch": function _catch(t) {
for (var e = this.tryEntries.length - 1; e >= 0; --e) {
var r = this.tryEntries[e];
if (r.tryLoc === t) {
var n = r.completion;
if ("throw" === n.type) {
var o = n.arg;
resetTryEntry(r);
}
return o;
}
}
throw new Error("illegal catch attempt");
},
delegateYield: function delegateYield(e, r, n) {
return this.delegate = {
iterator: values(e),
resultName: r,
nextLoc: n
}, "next" === this.method && (this.arg = t), y;
}
}, e;
}
module.exports = _regeneratorRuntime, module.exports.__esModule = true, module.exports["default"] = module.exports;
} (regeneratorRuntime$1));
var regeneratorRuntimeExports = regeneratorRuntime$1.exports;
// TODO(Babel 8): Remove this file.
var runtime = regeneratorRuntimeExports();
var regenerator = runtime;
// Copied from https://github.com/facebook/regenerator/blob/main/packages/runtime/runtime.js#L736=
try {
regeneratorRuntime = runtime;
} catch (accidentalStrictMode) {
if (typeof globalThis === "object") {
globalThis.regeneratorRuntime = runtime;
} else {
Function("r", "regeneratorRuntime = r")(runtime);
}
}
var _regeneratorRuntime = /*@__PURE__*/getDefaultExportFromCjs(regenerator);
/******************************************************************************
Copyright (c) Microsoft Corporation.
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
***************************************************************************** */
function __awaiter(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());
});
}
const t=new WeakMap;function e(t,e){return new Proxy(t,{get:(t,r)=>e(t[r])})}class r{constructor(){this.value=void 0,this.exports=null;}getState(){return this.exports.asyncify_get_state()}assertNoneState(){let t=this.getState();if(0!==t)throw new Error(`Invalid async state ${t}, expected 0.`)}wrapImportFn(t){return (...e)=>{if(2===this.getState())return this.exports.asyncify_stop_rewind(),this.value;this.assertNoneState();let r=t(...e);if(!(s=r)||"object"!=typeof s&&"function"!=typeof s||"function"!=typeof s.then)return r;var s;this.exports.asyncify_start_unwind(16),this.value=r;}}wrapModuleImports(t){return e(t,t=>"function"==typeof t?this.wrapImportFn(t):t)}wrapImports(t){if(void 0!==t)return e(t,(t=Object.create(null))=>this.wrapModuleImports(t))}wrapExportFn(e){let r=t.get(e);return void 0!==r||(r=async(...t)=>{this.assertNoneState();let r=e(...t);for(;1===this.getState();)this.exports.asyncify_stop_unwind(),this.value=await this.value,this.assertNoneState(),this.exports.asyncify_start_rewind(16),r=e();return this.assertNoneState(),r},t.set(e,r)),r}wrapExports(e){let r=Object.create(null);for(let t in e){let s=e[t];"function"!=typeof s||t.startsWith("asyncify_")||(s=this.wrapExportFn(s)),Object.defineProperty(r,t,{enumerable:!0,value:s});}return t.set(e,r),r}init(t,e){const{exports:r}=t,n=r.memory||e.env&&e.env.memory;new Int32Array(n.buffer,16).set([24,1024]),this.exports=this.wrapExports(r),Object.setPrototypeOf(t,s.prototype);}}class s extends WebAssembly.Instance{constructor(t,e){let s=new r;super(t,s.wrapImports(e)),s.init(this,e);}get exports(){return t.get(super.exports)}}async function n(t,e){let s=new r,n=await WebAssembly.instantiate(t,s.wrapImports(e));return s.init(n instanceof WebAssembly.Instance?n:n.instance,e),n}async function a(t,e){let s=new r,n=await WebAssembly.instantiateStreaming(t,s.wrapImports(e));return s.init(n.instance,e),n}Object.defineProperty(s.prototype,"exports",{enumerable:!0});
function _setPrototypeOf$1(o, p) {
_setPrototypeOf$1 = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) {
o.__proto__ = p;
return o;
};
return _setPrototypeOf$1(o, p);
}
function _inherits$1(subClass, superClass) {
if (typeof superClass !== "function" && superClass !== null) {
throw new TypeError("Super expression must either be null or a function");
}
subClass.prototype = Object.create(superClass && superClass.prototype, {
constructor: {
value: subClass,
writable: true,
configurable: true
}
});
Object.defineProperty(subClass, "prototype", {
writable: false
});
if (superClass) _setPrototypeOf$1(subClass, superClass);
}
function _typeof(o) {
"@babel/helpers - typeof";
return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) {
return typeof o;
} : function (o) {
return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o;
}, _typeof(o);
}
function _assertThisInitialized$1(self) {
if (self === void 0) {
throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
}
return self;
}
function _possibleConstructorReturn$1(self, call) {
if (call && (_typeof(call) === "object" || typeof call === "function")) {
return call;
} else if (call !== void 0) {
throw new TypeError("Derived constructors may only return object or undefined");
}
return _assertThisInitialized$1(self);
}
function _getPrototypeOf$1(o) {
_getPrototypeOf$1 = Object.setPrototypeOf ? Object.getPrototypeOf.bind() : function _getPrototypeOf(o) {
return o.__proto__ || Object.getPrototypeOf(o);
};
return _getPrototypeOf$1(o);
}
function _classCallCheck(instance, Constructor) {
if (!(instance instanceof Constructor)) {
throw new TypeError("Cannot call a class as a function");
}
}
function _toPrimitive(input, hint) {
if (_typeof(input) !== "object" || input === null) return input;
var prim = input[Symbol.toPrimitive];
if (prim !== undefined) {
var res = prim.call(input, hint || "default");
if (_typeof(res) !== "object") return res;
throw new TypeError("@@toPrimitive must return a primitive value.");
}
return (hint === "string" ? String : Number)(input);
}
function _toPropertyKey(arg) {
var key = _toPrimitive(arg, "string");
return _typeof(key) === "symbol" ? key : String(key);
}
function _defineProperties(target, props) {
for (var i = 0; i < props.length; i++) {
var descriptor = props[i];
descriptor.enumerable = descriptor.enumerable || false;
descriptor.configurable = true;
if ("value" in descriptor) descriptor.writable = true;
Object.defineProperty(target, _toPropertyKey(descriptor.key), descriptor);
}
}
function _createClass(Constructor, protoProps, staticProps) {
if (protoProps) _defineProperties(Constructor.prototype, protoProps);
if (staticProps) _defineProperties(Constructor, staticProps);
Object.defineProperty(Constructor, "prototype", {
writable: false
});
return Constructor;
}
/*
Copyright 2022-2023 Picovoice Inc.
You may not use this file except in compliance with the license. A copy of the license is located in the "LICENSE"
file accompanying this source.
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
*/
/**
* BasePvFile Class
* This class mocks the file system using in-memory storage.
*/
var PvFile = /*#__PURE__*/function () {
function PvFile() {
_classCallCheck(this, PvFile);
this._path = '';
}
/**
* Getter for file's meta information.
*/
_createClass(PvFile, [{
key: "meta",
get: function get() {
if (this._meta === undefined) {
return undefined;
}
return Object.assign({
version: 0
}, this._meta);
}
}, {
key: "pageSize",
get: function get() {
return undefined;
}
/**
* Get the file pointer from the _filePtrs map.
* @param ptr The pointer to BasePvFile instance to get from the map.
* @returns BasePvFile returns the current file instance related to ptr.
*/
}], [{
key: "getPtr",
value: function getPtr(ptr) {
if (PvFile._filePtrs.has(ptr)) {
return PvFile._filePtrs.get(ptr);
}
throw new Error('File instance not found.');
}
/**
* Saves the BasePvFile instance to the map with an associated ptr.
* @param ptr The file pointer to save as the key.
* @param instance The BasePvFile instance to save as the value.
*/
}, {
key: "setPtr",
value: function setPtr(ptr, instance) {
PvFile._filePtrs.set(ptr, instance);
}
/**
* Removes the ptr from the _filePtrs map.
* @param ptr The file pointer to remove.
*/
}, {
key: "removePtr",
value: function removePtr(ptr) {
PvFile._filePtrs["delete"](ptr);
}
}]);
return PvFile;
}();
PvFile._filePtrs = new Map();
function _createSuper$1(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct$1$1(); return function _createSuperInternal() { var Super = _getPrototypeOf$1(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf$1(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn$1(this, result); }; }
function _isNativeReflectConstruct$1$1() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
/**
* Indexed DB configurations
*/
var DB_NAME = 'pv_db';
var PV_FILE_STORE = 'pv_file';
var DB_VERSION = 3;
/**
* Helper to get IndexedDB.
*/
function getDB() {
return new Promise(function (resolve, reject) {
var request = self.indexedDB.open(DB_NAME, DB_VERSION);
request.onerror = function () {
reject(request.error);
};
request.onsuccess = function () {
resolve(request.result);
};
request.onupgradeneeded = function () {
if (!request.result.objectStoreNames.contains(PV_FILE_STORE)) {
request.result.createObjectStore(PV_FILE_STORE);
}
};
});
}
/**
* Cache Settings
*/
var PvCache = /*#__PURE__*/function () {
function PvCache() {
_classCallCheck(this, PvCache);
this._pos = 0;
this._data = new Uint8Array();
}
_createClass(PvCache, [{
key: "get",
value: function get(bytes) {
if (this._pos >= this._data.length) {
return undefined;
}
var res = this._data.slice(this._pos, this._pos + bytes);
this._pos += bytes;
return res;
}
}, {
key: "set",
value: function set(pos, data) {
this._pos = pos;
this._data = data;
}
}, {
key: "clear",
value: function clear() {
this._pos = 0;
this._data = new Uint8Array();
}
}]);
return PvCache;
}();
/**
* PvFile Class
* This class mocks the file system using IndexedDB.
* IndexedDB is REQUIRED.
*/
var PvFileIDB = /*#__PURE__*/function (_PvFile) {
_inherits$1(PvFileIDB, _PvFile);
var _super = _createSuper$1(PvFileIDB);
/**
* Constructor of PvFile instance.
* @param path The path of a file.
* @param meta The metadata of the file.
* @param db The db instance currently related to the opened file.
* @param mode The mode - either readonly or readwrite.
*/
function PvFileIDB(path, meta, db, mode) {
var _this;
_classCallCheck(this, PvFileIDB);
_this = _super.call(this);
_this._pageSize = 512 * 1024; // 512KB
_this._pagePtr = 0;
_this._pageOffset = 0;
_this._path = path;
_this._meta = meta;
_this._db = db;
_this._mode = mode;
_this._cache = new PvCache();
return _this;
}
/**
* Opens a file and return an instance of PvFile. A file can be opened in readonly or readwrite mode
* which follows IndexedDB standard of reading and writing values to the db.
* The file is stored as an Uint8Array separated by pages.
* NOTE: The key exactly matching the path expects a value of type PvFileMeta.
* @param path The path of the file to open stored in IndexedDB.
* @param mode A string, if it contains 'r' in the string, it will open the file in readonly mode, else it
* will open in readwrite mode.
* @returns Promise<PvFile> An instance of PvFile.
* @throws Error if IndexedDB is not supported.
*/
_createClass(PvFileIDB, [{
key: "pageSize",
get: function get() {
return this._pageSize;
}
}, {
key: "close",
value:
/**
* Closes the db connection. Any other instance function call will not work once
* the db is closed.
*/
function close() {
return __awaiter(this, void 0, void 0, /*#__PURE__*/_regeneratorRuntime.mark(function _callee() {
return _regeneratorRuntime.wrap(function _callee$(_context) {
while (1) switch (_context.prev = _context.next) {
case 0:
this._db.close();
case 1:
case "end":
return _context.stop();
}
}, _callee, this);
}));
}
/**
* Reads a total of 'count' elements, each with a size of 'size' bytes from the current position in the stream.
* Moves the stream by the amount of elements read.
* If the last few bytes is smaller than 'size' it will not read (similar to fread) the bytes.
* @param size The element size.
* @param count The number of elements to read.
* @returns Promise<Uint8Array> A Uint8Array with the elements copied to it.
* @throws Error if file doesn't exist or if EOF.
*/
}, {
key: "read",
value: function read(size, count) {
return __awaiter(this, void 0, void 0, /*#__PURE__*/_regeneratorRuntime.mark(function _callee2() {
var _this2 = this;
return _regeneratorRuntime.wrap(function _callee2$(_context2) {
while (1) switch (_context2.prev = _context2.next) {
case 0:
return _context2.abrupt("return", new Promise(function (resolve, reject) {
if (!_this2.exists()) {
reject(new Error("'".concat(_this2._path, "' doesn't exist.")));
return;
}
if (_this2._isEOF) {
var err = new Error("EOF");
err.name = "EndOfFile";
reject(err);
return;
}
var copied = 0;
var maxToCopy = Math.min(size * count, _this2._meta.size);
var totalElems = maxToCopy - maxToCopy % size;
var buffer = new Uint8Array(totalElems);
// check if there's data in cache
var res = _this2._cache.get(totalElems);
if (res) {
copied += res.length;
_this2._pageOffset += res.length;
if (_this2._pageOffset === _this2._pageSize) {
_this2._pagePtr += 1;
_this2._pageOffset = 0;
}
if (totalElems === copied) {
resolve(res);
return;
}
buffer.set(res);
}
var keyRange = IDBKeyRange.bound("".concat(_this2._path, "-").concat(PvFileIDB.createPage(_this2._pagePtr)), "".concat(_this2._path, "-").concat(PvFileIDB.createPage(_this2._pagePtr + Math.floor(totalElems / _this2._pageSize) + 1)));
var store = _this2._store;
var req = store.openCursor(keyRange);
req.onsuccess = function () {
var _a, _b;
var cursor = req.result;
if (!cursor || _this2._isEOF) {
return;
}
var toCopy = Math.min(totalElems - copied, cursor.value.length - _this2._pageOffset);
buffer.set(cursor.value.slice(_this2._pageOffset, _this2._pageOffset + toCopy), copied);
copied += toCopy;
_this2._pageOffset += toCopy;
if (_this2._pageOffset === _this2._pageSize) {
_this2._pagePtr += 1;
_this2._pageOffset = 0;
}
if (copied < totalElems) {
cursor["continue"]();
} else {
if (_this2._pageOffset !== 0) {
_this2._cache.set(_this2._pageOffset, cursor.value);
} else {
_this2._cache.clear();
}
if ((_a = store.transaction) === null || _a === void 0 ? void 0 : _a.commit) {
(_b = store.transaction)