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// This file is a basic example of using a chart inside a web worker.
// All it creates a new chart from a transferred OffscreenCanvas and then assert that the correct platform type was
// used.
// Receives messages with data of type: { type: 'initialize', canvas: OffscreenCanvas }
// Sends messages with data of types: { type: 'success' } | { type: 'error', errorMessage: string }
// eslint-disable-next-line no-undef
importScripts('../src/chart.js');
onmessage = function(event) {
try {
const {type, canvas} = event.data;
if (type !== 'initialize') {
throw new Error('invalid message type received by worker: ' + type);
}
const chart = new Chart(canvas);
if (!(chart.platform instanceof Chart.platforms.BasicPlatform)) {
throw new Error('did not use basic platform for chart in web worker');
}
postMessage({type: 'success'});
} catch (error) {
postMessage({type: 'error', errorMessage: error.stack});
}
};
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