[英]lamejs not working with angular 8 -- Uncaught ReferenceError: Lame is not defined
我在 package.json 中添加了 "lamejs": "^1.2.0",然后在 app.component.ts 中添加了以下幾行:
var lamejs = require("lamejs");
let channels = 1; //1 for mono or 2 for stereo
let sampleRate = 44100; //44.1khz (normal mp3 samplerate)
let kbps = 128; //encode 128kbps mp3
let mp3encoder = new lamejs.Mp3Encoder(channels, sampleRate, kbps);
var mp3Data = [];
let samples = new Int16Array(44100); //one second of silence (get your data from the source you have)
let sampleBlockSize = 1152; //can be anything but make it a multiple of 576 to make encoders life easier
var mp3Data = [];
let sampleChunk;
for (var i = 0; i < samples.length; i += sampleBlockSize) {
sampleChunk = samples.subarray(i, i + sampleBlockSize);
var mp3buf = mp3encoder.encodeBuffer(sampleChunk);
if (mp3buf.length > 0) {
mp3Data.push(mp3buf);
}
}
var mp3buf = mp3encoder.flush(); //finish writing mp3
if (mp3buf.length > 0) {
mp3Data.push(new `Int8Array(mp3buf));`
}
var blob = new Blob(mp3Data, { type: 'audio/mp3' });
var url = window.URL.createObjectURL(blob);
console.log('MP3 URl: ', url);
我在控制台中收到此錯誤,index.js:17 Uncaught ReferenceError: Lame is not defined at Object../node_modules/lamejs/src/js/index.js
當我在該行打開這個 index.js 時,我看到 Lame = require('./Lame.js');
Lame 變量在沒有聲明的情況下被使用,我該如何進行,我一直在修復這些聲明問題的錯誤,但這個列表一直在繼續。
從https://github.com/zhuker/lamejs下載lame.all.js
和lame.min.js
文件並將它們放入您的資產文件夾中。
src/assets/lamejs/lame.all.js
src/assets/lamejs/lame.min.js
將腳本標記添加到您的index.html
文件
<script src='assets/lamejs/lame.all.js'></script>
在 component.ts 或 service.ts 中所有導入后聲明 lamejs 的變量,然后您就可以使用它了。
declare var lamejs;
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