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