50 lines
1.6 KiB
JavaScript
50 lines
1.6 KiB
JavaScript
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/* Determine browser vs node environment by testing the default top level context. Solution courtesy of: https://stackoverflow.com/questions/17575790/environment-detection-node-js-or-browser */
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const isBrowserEnvironment = (function() {
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// eslint-disable-next-line no-undef
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return (typeof window !== "undefined") && (this === window);
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}).call();
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if (isBrowserEnvironment) {
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// Web version of reading a wasm file into an array buffer.
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let mappingsWasm = null;
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module.exports = function readWasm() {
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if (typeof mappingsWasm === "string") {
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return fetch(mappingsWasm)
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.then(response => response.arrayBuffer());
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}
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if (mappingsWasm instanceof ArrayBuffer) {
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return Promise.resolve(mappingsWasm);
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}
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throw new Error("You must provide the string URL or ArrayBuffer contents " +
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"of lib/mappings.wasm by calling " +
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"SourceMapConsumer.initialize({ 'lib/mappings.wasm': ... }) " +
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"before using SourceMapConsumer");
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};
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module.exports.initialize = input => mappingsWasm = input;
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} else {
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// Node version of reading a wasm file into an array buffer.
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const fs = require("fs");
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const path = require("path");
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module.exports = function readWasm() {
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return new Promise((resolve, reject) => {
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const wasmPath = path.join(__dirname, "mappings.wasm");
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fs.readFile(wasmPath, null, (error, data) => {
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if (error) {
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reject(error);
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return;
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}
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resolve(data.buffer);
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});
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});
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};
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module.exports.initialize = _ => {
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console.debug("SourceMapConsumer.initialize is a no-op when running in node.js");
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};
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}
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