I'm trying to implement a function using a worker. The source code is as follows, but I received an error message saying, "Uncaught Type Error: worker.postMessage is not a function." What should I do?
I am working on react.
someModule.js
import WorkerScript from './process.worker.js';
var SomeModule = (function() {
if (window.Worker) {
let worker = new WorkerScript();
worker.onmessage = (event) => {
console.log(event.data);
}
const someFunction = function(blob, decomposition = false) {
worker.postMessage({ init : true }); //The part where an error occurs.
...
}
}
})
process.worker.js
export default class WorkerScript {
constructor() {
console.log("Worker Enabled.");
...
if ("function" === typeof importScripts) {
importScripts("Mp3LameEncoder.min.js");
}
...
onmessage = (event) => {
if (event.data.init) {
index = 0;
} else {
Promise.resolve(event.data).then(convert());
}
};
// Buffer needs two channels
function convert() {
index++;
return (buffer) => {
...
postMessage({
index: buffer.step,
...
});
};
}
}
}
The original codes of the above two can be found in the link below. https://github.com/yoannck/WebM-MP3
config-overrides.js (at root)
const lodashCloneDeep = require('lodash/cloneDeep');
module.exports = function override(config, env) {
// Add worker-loader by hijacking configuration for regular .js files.
const workerExtension = /\.worker\.js$/;
...
return config;
};
The full source code of 'config-overrides.js' can be seen here. https://github.com/facebook/create-react-app/issues/1277#issuecomment-313950613
If I print the worker
into the console, it's as follows. ibb.co/JKQV8rq
I do not know React but someone from another forum said that you have to manually add the plugin. I don't understand it but it was something like this, and it was marked as working:
const WorkerPlugin = require('worker-plugin');
plugins: [
new WorkerPlugin(),
...
I hope this points you at least to the right direction.
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