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Natours/starter/node_modules/source-map/lib/read-wasm.js

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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 */
+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");
+  };
+}