diff --git a/cmd/audio-player/adpcm.js b/cmd/audio-player/adpcm.js index a2cb4036..6767452e 100644 --- a/cmd/audio-player/adpcm.js +++ b/cmd/audio-player/adpcm.js @@ -1,3 +1,32 @@ +/* +NAME + adpcm.js + +AUTHOR + Trek Hopton + +LICENSE + This file is Copyright (C) 2018 the Australian Ocean Lab (AusOcean) + + It is free software: you can redistribute it and/or modify them + under the terms of the GNU General Public License as published by the + Free Software Foundation, either version 3 of the License, or (at your + option) any later version. + + It is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + for more details. + + You should have received a copy of the GNU General Public License in gpl.txt. + If not, see [GNU licenses](http://www.gnu.org/licenses). +*/ + +/* + Original IMA/DVI ADPCM specification: (http://www.cs.columbia.edu/~hgs/audio/dvi/IMA_ADPCM.pdf). + Reference algorithms for ADPCM compression and decompression are in part 6. +*/ + const indexTable = [ -1, -1, -1, -1, 2, 4, 6, 8, -1, -1, -1, -1, 2, 4, 6, 8 @@ -30,6 +59,7 @@ let est = 0, // Estimation of sample based on quantised ADPCM nibble. idx = 0, // Index to step used for estimation. step = 0; +// decodeSample takes 4 bits which represents a single ADPCM nibble, and returns a 16 bit decoded PCM sample. function decodeSample(nibble) { let diff = 0; if ((nibble & 4) != 0) { @@ -61,6 +91,7 @@ function decodeSample(nibble) { return result; } +// decode takes an array of bytes of arbitrary length representing adpcm and decodes it into pcm. function decode(b) { // Initialize Decoder with first 4 bytes of b. est = bytesToInt16(b[0], b[1]); diff --git a/cmd/audio-player/index.html b/cmd/audio-player/index.html index d4015ab4..1624870f 100644 --- a/cmd/audio-player/index.html +++ b/cmd/audio-player/index.html @@ -4,20 +4,34 @@ Audio Player - + - + - -
-
- + +
+
+
+ +
+
+ +
+
+
+ ©2019 Australian Ocean Laboratory Limited (AusOcean) (License) +
+
\ No newline at end of file diff --git a/cmd/audio-player/main.go b/cmd/audio-player/main.go deleted file mode 100644 index 970cfccb..00000000 --- a/cmd/audio-player/main.go +++ /dev/null @@ -1,81 +0,0 @@ -package main - -import ( - "bytes" - "reflect" - "syscall/js" - "unsafe" - - "bitbucket.org/ausocean/av/codec/adpcm" -) - -func main() { - dec := NewDecoder() - dec.Start() -} - -// Decoder is a client side adpcm decoder -type Decoder struct { - inBuf []uint8 - onImgLoadCb, initMemCb, getDecLenCb js.Func - console js.Value - done chan struct{} -} - -// NewDecoder returns a new instance of decoder -func NewDecoder() *Decoder { - return &Decoder{ - console: js.Global().Get("console"), - done: make(chan struct{}), - } -} - -func (s *Decoder) setupOnImgLoadCb() { - s.onImgLoadCb = js.FuncOf(func(this js.Value, args []js.Value) interface{} { - // reader := bytes.NewReader(s.inBuf) - - //DECODING HAPPENS HERE - - decoded := bytes.NewBuffer(make([]byte, 0, len(s.inBuf)*4)) - dec := adpcm.NewDecoder(decoded) - dec.Write(s.inBuf) - - s.inBuf = decoded.Bytes() - - return nil - }) -} - -func (s *Decoder) setupInitMemCb() { - // The length of the data array buffer is passed. - // Then the buf slice is initialized to that length. - // A pointer to that slice is passed back to the browser. - s.initMemCb = js.FuncOf(func(this js.Value, i []js.Value) interface{} { - length := i[0].Int() - s.console.Call("log", "length:", length) - s.inBuf = make([]uint8, length) - hdr := (*reflect.SliceHeader)(unsafe.Pointer(&s.inBuf)) - ptr := uintptr(unsafe.Pointer(hdr.Data)) - s.console.Call("log", "ptr:", ptr) - js.Global().Call("gotMem", ptr) - return nil - }) -} - -func (s *Decoder) setupGetDecLenCb() { - s.getDecLenCb = js.FuncOf(func(this js.Value, i []js.Value) interface{} { - return len(s.inBuf) - }) -} - -// Start sets up all the callbacks and waits for the close signal -// to be sent from the browser. -func (s *Decoder) Start() { - s.setupInitMemCb() - js.Global().Set("initMem", s.initMemCb) - s.setupOnImgLoadCb() - js.Global().Set("loadData", s.onImgLoadCb) - s.setupGetDecLenCb() - js.Global().Set("getDecLen", s.getDecLenCb) - <-s.done -} diff --git a/cmd/audio-player/main.js b/cmd/audio-player/main.js index b68ab43f..00d0eab6 100644 --- a/cmd/audio-player/main.js +++ b/cmd/audio-player/main.js @@ -1,3 +1,27 @@ +/* +NAME + main.js + +AUTHOR + Trek Hopton + +LICENSE + This file is Copyright (C) 2018 the Australian Ocean Lab (AusOcean) + + It is free software: you can redistribute it and/or modify them + under the terms of the GNU General Public License as published by the + Free Software Foundation, either version 3 of the License, or (at your + option) any later version. + + It is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + for more details. + + You should have received a copy of the GNU General Public License in gpl.txt. + If not, see [GNU licenses](http://www.gnu.org/licenses). +*/ + window.onload = function () { document.getElementById('input').addEventListener('change', function () { @@ -7,16 +31,24 @@ window.onload = function () { reader.onload = event => { bytes = new Uint8Array(event.target.result) + // decode adpcm to pcm var decoded = decode(Array.from(bytes)) - console.log("playing file") - var player = new PCMPlayer({ - encoding: '16bitInt', - channels: 1, - sampleRate: 48000, - flushingTime: 2000 + // convert raw pcm to wav + var wav = pcmToWav(decoded, 48000, 1, 16); + + // play wav data in player + const blob = new Blob([Uint8Array.from(wav)], { + type: 'audio/wav' }); - player.feed(Uint8Array.from(decoded)) + const url = URL.createObjectURL(blob); + + const audio = document.getElementById('audio'); + const source = document.getElementById('source'); + + source.src = url; + audio.load(); + audio.play(); } reader.onerror = error => reject(error) reader.readAsArrayBuffer(input) diff --git a/cmd/audio-player/pcm-player.min.js b/cmd/audio-player/pcm-player.min.js deleted file mode 100644 index 42c33624..00000000 --- a/cmd/audio-player/pcm-player.min.js +++ /dev/null @@ -1 +0,0 @@ -function PCMPlayer(t){this.init(t)}PCMPlayer.prototype.init=function(t){this.option=Object.assign({},{encoding:"16bitInt",channels:1,sampleRate:8e3,flushingTime:1e3},t),this.samples=new Float32Array,this.flush=this.flush.bind(this),this.interval=setInterval(this.flush,this.option.flushingTime),this.maxValue=this.getMaxValue(),this.typedArray=this.getTypedArray(),this.createContext()},PCMPlayer.prototype.getMaxValue=function(){var t={"8bitInt":128,"16bitInt":32768,"32bitInt":2147483648,"32bitFloat":1};return t[this.option.encoding]?t[this.option.encoding]:t["16bitInt"]},PCMPlayer.prototype.getTypedArray=function(){var t={"8bitInt":Int8Array,"16bitInt":Int16Array,"32bitInt":Int32Array,"32bitFloat":Float32Array};return t[this.option.encoding]?t[this.option.encoding]:t["16bitInt"]},PCMPlayer.prototype.createContext=function(){this.audioCtx=new(window.AudioContext||window.webkitAudioContext),this.gainNode=this.audioCtx.createGain(),this.gainNode.gain.value=1,this.gainNode.connect(this.audioCtx.destination),this.startTime=this.audioCtx.currentTime},PCMPlayer.prototype.isTypedArray=function(t){return t.byteLength&&t.buffer&&t.buffer.constructor==ArrayBuffer},PCMPlayer.prototype.feed=function(t){if(this.isTypedArray(t)){t=this.getFormatedValue(t);var e=new Float32Array(this.samples.length+t.length);e.set(this.samples,0),e.set(t,this.samples.length),this.samples=e}},PCMPlayer.prototype.getFormatedValue=function(t){t=new this.typedArray(t.buffer);var e,i=new Float32Array(t.length);for(e=0;e + +LICENSE + This file is Copyright (C) 2018 the Australian Ocean Lab (AusOcean) + + It is free software: you can redistribute it and/or modify them + under the terms of the GNU General Public License as published by the + Free Software Foundation, either version 3 of the License, or (at your + option) any later version. + + It is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + for more details. + + You should have received a copy of the GNU General Public License in gpl.txt. + If not, see [GNU licenses](http://www.gnu.org/licenses). +*/ + +// pcmToWav takes raw pcm data along with the sample rate, number of channels and bit-depth, +// and adds a WAV header to it so that it can be read and played by common players. +// input and output data bytes are represented as arrays of 8 bit integers. +// WAV spec.: http://soundfile.sapp.org/doc/WaveFormat/ +function pcmToWav(data, rate, channels, bitdepth) { + subChunk2ID = [100, 97, 116, 97]; // "data" + subChunk2Size = int32ToBytes(data.length); + + subChunk1ID = [102, 109, 116, 32]; // "fmt " + subChunk1Size = int32ToBytes(16); + audioFmt = int16ToBytes(1); // 1 = PCM + numChannels = int16ToBytes(channels); + sampleRate = int32ToBytes(rate); + byteRate = int32ToBytes(rate * channels * bitdepth / 8); + blockAlign = int16ToBytes(channels * bitdepth / 8); + bitsPerSample = int16ToBytes(bitdepth) + + chunkID = [82, 73, 70, 70]; // "RIFF" + chunkSize = int32ToBytes(36 + data.length); + format = [87, 65, 86, 69]; // "WAVE" + + result = chunkID; + result.push(...chunkSize, ...format, ...subChunk1ID, ...subChunk1Size, ...audioFmt, ...numChannels, ...sampleRate, ...byteRate, ...blockAlign, ...bitsPerSample, ...subChunk2ID, ...subChunk2Size); + return result.concat(data); +} + +// int32ToBytes takes a number assumed to be an int 32 and converts it to an array containing bytes (Little Endian). +function int32ToBytes(num) { + return [ + (num & 0x000000ff), + (num & 0x0000ff00) >> 8, + (num & 0x00ff0000) >> 16, + (num & 0xff000000) >> 24 + ]; +} + +// int16ToBytes takes a number assumed to be an int 16 and converts it to an array containing bytes (Little Endian). +function int16ToBytes(num) { + return [(num & 0x00ff), (num & 0xff00) >> 8]; +} \ No newline at end of file diff --git a/cmd/audio-player/wasm_exec.js b/cmd/audio-player/wasm_exec.js deleted file mode 100644 index 165d5677..00000000 --- a/cmd/audio-player/wasm_exec.js +++ /dev/null @@ -1,465 +0,0 @@ -// Copyright 2018 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -(() => { - if (typeof global !== "undefined") { - // global already exists - } else if (typeof window !== "undefined") { - window.global = window; - } else if (typeof self !== "undefined") { - self.global = self; - } else { - throw new Error("cannot export Go (neither global, window nor self is defined)"); - } - - // Map web browser API and Node.js API to a single common API (preferring web standards over Node.js API). - const isNodeJS = global.process && global.process.title === "node"; - if (isNodeJS) { - global.require = require; - global.fs = require("fs"); - - const nodeCrypto = require("crypto"); - global.crypto = { - getRandomValues(b) { - nodeCrypto.randomFillSync(b); - }, - }; - - global.performance = { - now() { - const [sec, nsec] = process.hrtime(); - return sec * 1000 + nsec / 1000000; - }, - }; - - const util = require("util"); - global.TextEncoder = util.TextEncoder; - global.TextDecoder = util.TextDecoder; - } else { - let outputBuf = ""; - global.fs = { - constants: { O_WRONLY: -1, O_RDWR: -1, O_CREAT: -1, O_TRUNC: -1, O_APPEND: -1, O_EXCL: -1 }, // unused - writeSync(fd, buf) { - outputBuf += decoder.decode(buf); - const nl = outputBuf.lastIndexOf("\n"); - if (nl != -1) { - console.log(outputBuf.substr(0, nl)); - outputBuf = outputBuf.substr(nl + 1); - } - return buf.length; - }, - write(fd, buf, offset, length, position, callback) { - if (offset !== 0 || length !== buf.length || position !== null) { - throw new Error("not implemented"); - } - const n = this.writeSync(fd, buf); - callback(null, n); - }, - open(path, flags, mode, callback) { - const err = new Error("not implemented"); - err.code = "ENOSYS"; - callback(err); - }, - read(fd, buffer, offset, length, position, callback) { - const err = new Error("not implemented"); - err.code = "ENOSYS"; - callback(err); - }, - fsync(fd, callback) { - callback(null); - }, - }; - } - - const encoder = new TextEncoder("utf-8"); - const decoder = new TextDecoder("utf-8"); - - global.Go = class { - constructor() { - this.argv = ["js"]; - this.env = {}; - this.exit = (code) => { - if (code !== 0) { - console.warn("exit code:", code); - } - }; - this._exitPromise = new Promise((resolve) => { - this._resolveExitPromise = resolve; - }); - this._pendingEvent = null; - this._scheduledTimeouts = new Map(); - this._nextCallbackTimeoutID = 1; - - const mem = () => { - // The buffer may change when requesting more memory. - return new DataView(this._inst.exports.mem.buffer); - } - - const setInt64 = (addr, v) => { - mem().setUint32(addr + 0, v, true); - mem().setUint32(addr + 4, Math.floor(v / 4294967296), true); - } - - const getInt64 = (addr) => { - const low = mem().getUint32(addr + 0, true); - const high = mem().getInt32(addr + 4, true); - return low + high * 4294967296; - } - - const loadValue = (addr) => { - const f = mem().getFloat64(addr, true); - if (f === 0) { - return undefined; - } - if (!isNaN(f)) { - return f; - } - - const id = mem().getUint32(addr, true); - return this._values[id]; - } - - const storeValue = (addr, v) => { - const nanHead = 0x7FF80000; - - if (typeof v === "number") { - if (isNaN(v)) { - mem().setUint32(addr + 4, nanHead, true); - mem().setUint32(addr, 0, true); - return; - } - if (v === 0) { - mem().setUint32(addr + 4, nanHead, true); - mem().setUint32(addr, 1, true); - return; - } - mem().setFloat64(addr, v, true); - return; - } - - switch (v) { - case undefined: - mem().setFloat64(addr, 0, true); - return; - case null: - mem().setUint32(addr + 4, nanHead, true); - mem().setUint32(addr, 2, true); - return; - case true: - mem().setUint32(addr + 4, nanHead, true); - mem().setUint32(addr, 3, true); - return; - case false: - mem().setUint32(addr + 4, nanHead, true); - mem().setUint32(addr, 4, true); - return; - } - - let ref = this._refs.get(v); - if (ref === undefined) { - ref = this._values.length; - this._values.push(v); - this._refs.set(v, ref); - } - let typeFlag = 0; - switch (typeof v) { - case "string": - typeFlag = 1; - break; - case "symbol": - typeFlag = 2; - break; - case "function": - typeFlag = 3; - break; - } - mem().setUint32(addr + 4, nanHead | typeFlag, true); - mem().setUint32(addr, ref, true); - } - - const loadSlice = (addr) => { - const array = getInt64(addr + 0); - const len = getInt64(addr + 8); - return new Uint8Array(this._inst.exports.mem.buffer, array, len); - } - - const loadSliceOfValues = (addr) => { - const array = getInt64(addr + 0); - const len = getInt64(addr + 8); - const a = new Array(len); - for (let i = 0; i < len; i++) { - a[i] = loadValue(array + i * 8); - } - return a; - } - - const loadString = (addr) => { - const saddr = getInt64(addr + 0); - const len = getInt64(addr + 8); - return decoder.decode(new DataView(this._inst.exports.mem.buffer, saddr, len)); - } - - const timeOrigin = Date.now() - performance.now(); - this.importObject = { - go: { - // Go's SP does not change as long as no Go code is running. Some operations (e.g. calls, getters and setters) - // may synchronously trigger a Go event handler. This makes Go code get executed in the middle of the imported - // function. A goroutine can switch to a new stack if the current stack is too small (see morestack function). - // This changes the SP, thus we have to update the SP used by the imported function. - - // func wasmExit(code int32) - "runtime.wasmExit": (sp) => { - const code = mem().getInt32(sp + 8, true); - this.exited = true; - delete this._inst; - delete this._values; - delete this._refs; - this.exit(code); - }, - - // func wasmWrite(fd uintptr, p unsafe.Pointer, n int32) - "runtime.wasmWrite": (sp) => { - const fd = getInt64(sp + 8); - const p = getInt64(sp + 16); - const n = mem().getInt32(sp + 24, true); - fs.writeSync(fd, new Uint8Array(this._inst.exports.mem.buffer, p, n)); - }, - - // func nanotime() int64 - "runtime.nanotime": (sp) => { - setInt64(sp + 8, (timeOrigin + performance.now()) * 1000000); - }, - - // func walltime() (sec int64, nsec int32) - "runtime.walltime": (sp) => { - const msec = (new Date).getTime(); - setInt64(sp + 8, msec / 1000); - mem().setInt32(sp + 16, (msec % 1000) * 1000000, true); - }, - - // func scheduleTimeoutEvent(delay int64) int32 - "runtime.scheduleTimeoutEvent": (sp) => { - const id = this._nextCallbackTimeoutID; - this._nextCallbackTimeoutID++; - this._scheduledTimeouts.set(id, setTimeout( - () => { this._resume(); }, - getInt64(sp + 8) + 1, // setTimeout has been seen to fire up to 1 millisecond early - )); - mem().setInt32(sp + 16, id, true); - }, - - // func clearTimeoutEvent(id int32) - "runtime.clearTimeoutEvent": (sp) => { - const id = mem().getInt32(sp + 8, true); - clearTimeout(this._scheduledTimeouts.get(id)); - this._scheduledTimeouts.delete(id); - }, - - // func getRandomData(r []byte) - "runtime.getRandomData": (sp) => { - crypto.getRandomValues(loadSlice(sp + 8)); - }, - - // func stringVal(value string) ref - "syscall/js.stringVal": (sp) => { - storeValue(sp + 24, loadString(sp + 8)); - }, - - // func valueGet(v ref, p string) ref - "syscall/js.valueGet": (sp) => { - const result = Reflect.get(loadValue(sp + 8), loadString(sp + 16)); - sp = this._inst.exports.getsp(); // see comment above - storeValue(sp + 32, result); - }, - - // func valueSet(v ref, p string, x ref) - "syscall/js.valueSet": (sp) => { - Reflect.set(loadValue(sp + 8), loadString(sp + 16), loadValue(sp + 32)); - }, - - // func valueIndex(v ref, i int) ref - "syscall/js.valueIndex": (sp) => { - storeValue(sp + 24, Reflect.get(loadValue(sp + 8), getInt64(sp + 16))); - }, - - // valueSetIndex(v ref, i int, x ref) - "syscall/js.valueSetIndex": (sp) => { - Reflect.set(loadValue(sp + 8), getInt64(sp + 16), loadValue(sp + 24)); - }, - - // func valueCall(v ref, m string, args []ref) (ref, bool) - "syscall/js.valueCall": (sp) => { - try { - const v = loadValue(sp + 8); - const m = Reflect.get(v, loadString(sp + 16)); - const args = loadSliceOfValues(sp + 32); - const result = Reflect.apply(m, v, args); - sp = this._inst.exports.getsp(); // see comment above - storeValue(sp + 56, result); - mem().setUint8(sp + 64, 1); - } catch (err) { - storeValue(sp + 56, err); - mem().setUint8(sp + 64, 0); - } - }, - - // func valueInvoke(v ref, args []ref) (ref, bool) - "syscall/js.valueInvoke": (sp) => { - try { - const v = loadValue(sp + 8); - const args = loadSliceOfValues(sp + 16); - const result = Reflect.apply(v, undefined, args); - sp = this._inst.exports.getsp(); // see comment above - storeValue(sp + 40, result); - mem().setUint8(sp + 48, 1); - } catch (err) { - storeValue(sp + 40, err); - mem().setUint8(sp + 48, 0); - } - }, - - // func valueNew(v ref, args []ref) (ref, bool) - "syscall/js.valueNew": (sp) => { - try { - const v = loadValue(sp + 8); - const args = loadSliceOfValues(sp + 16); - const result = Reflect.construct(v, args); - sp = this._inst.exports.getsp(); // see comment above - storeValue(sp + 40, result); - mem().setUint8(sp + 48, 1); - } catch (err) { - storeValue(sp + 40, err); - mem().setUint8(sp + 48, 0); - } - }, - - // func valueLength(v ref) int - "syscall/js.valueLength": (sp) => { - setInt64(sp + 16, parseInt(loadValue(sp + 8).length)); - }, - - // valuePrepareString(v ref) (ref, int) - "syscall/js.valuePrepareString": (sp) => { - const str = encoder.encode(String(loadValue(sp + 8))); - storeValue(sp + 16, str); - setInt64(sp + 24, str.length); - }, - - // valueLoadString(v ref, b []byte) - "syscall/js.valueLoadString": (sp) => { - const str = loadValue(sp + 8); - loadSlice(sp + 16).set(str); - }, - - // func valueInstanceOf(v ref, t ref) bool - "syscall/js.valueInstanceOf": (sp) => { - mem().setUint8(sp + 24, loadValue(sp + 8) instanceof loadValue(sp + 16)); - }, - - "debug": (value) => { - console.log(value); - }, - } - }; - } - - async run(instance) { - this._inst = instance; - this._values = [ // TODO: garbage collection - NaN, - 0, - null, - true, - false, - global, - this._inst.exports.mem, - this, - ]; - this._refs = new Map(); - this.exited = false; - - const mem = new DataView(this._inst.exports.mem.buffer) - - // Pass command line arguments and environment variables to WebAssembly by writing them to the linear memory. - let offset = 4096; - - const strPtr = (str) => { - let ptr = offset; - new Uint8Array(mem.buffer, offset, str.length + 1).set(encoder.encode(str + "\0")); - offset += str.length + (8 - (str.length % 8)); - return ptr; - }; - - const argc = this.argv.length; - - const argvPtrs = []; - this.argv.forEach((arg) => { - argvPtrs.push(strPtr(arg)); - }); - - const keys = Object.keys(this.env).sort(); - argvPtrs.push(keys.length); - keys.forEach((key) => { - argvPtrs.push(strPtr(`${key}=${this.env[key]}`)); - }); - - const argv = offset; - argvPtrs.forEach((ptr) => { - mem.setUint32(offset, ptr, true); - mem.setUint32(offset + 4, 0, true); - offset += 8; - }); - - this._inst.exports.run(argc, argv); - if (this.exited) { - this._resolveExitPromise(); - } - await this._exitPromise; - } - - _resume() { - if (this.exited) { - throw new Error("Go program has already exited"); - } - this._inst.exports.resume(); - if (this.exited) { - this._resolveExitPromise(); - } - } - - _makeFuncWrapper(id) { - const go = this; - return function () { - const event = { id: id, this: this, args: arguments }; - go._pendingEvent = event; - go._resume(); - return event.result; - }; - } - } - - if (isNodeJS) { - if (process.argv.length < 3) { - process.stderr.write("usage: go_js_wasm_exec [wasm binary] [arguments]\n"); - process.exit(1); - } - - const go = new Go(); - go.argv = process.argv.slice(2); - go.env = Object.assign({ TMPDIR: require("os").tmpdir() }, process.env); - go.exit = process.exit; - WebAssembly.instantiate(fs.readFileSync(process.argv[2]), go.importObject).then((result) => { - process.on("exit", (code) => { // Node.js exits if no event handler is pending - if (code === 0 && !go.exited) { - // deadlock, make Go print error and stack traces - go._pendingEvent = { id: 0 }; - go._resume(); - } - }); - return go.run(result.instance); - }).catch((err) => { - throw err; - }); - } -})();