tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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import-meta.js (1852B)

      1 // |jit-test| module
      2 
      3 // import.meta is an object.
      4 assertEq(typeof import.meta, "object");
      5 assertEq(import.meta !== null, true);
      6 
      7 // import.meta always returns the same object.
      8 let obj = import.meta;
      9 assertEq(import.meta, obj);
     10 
     11 // Test calling from lazily compile function.
     12 function get() {
     13    return import.meta;
     14 }
     15 assertEq(get(), import.meta);
     16 
     17 // import.meta.url: This property will contain the module script's base URL,
     18 // serialized.
     19 
     20 assertEq("url" in import.meta, true);
     21 assertEq(import.meta.url.endsWith("import-meta.js"), true);
     22 
     23 assertEq("resolve" in import.meta, true);
     24 
     25 assertEq(import.meta.resolve("./x"),
     26         import.meta.url.replace("import-meta.js", "x"));
     27 
     28 import getOtherMetaObject from "exportImportMeta.js";
     29 
     30 let otherImportMeta = getOtherMetaObject();
     31 assertEq(otherImportMeta.url.endsWith("exportImportMeta.js"), true);
     32 
     33 // By default the import.meta object will be extensible, and its properties will
     34 // be writable, configurable, and enumerable.
     35 
     36 assertEq(Object.isExtensible(import.meta), true);
     37 
     38 for (const name of Reflect.ownKeys(import.meta)) {
     39  const desc = Object.getOwnPropertyDescriptor(import.meta, name);
     40  assertEq(desc.writable, true);
     41  assertEq(desc.enumerable, true);
     42  assertEq(desc.configurable, true);
     43  assertEq(desc.value, import.meta[name]);
     44 }
     45 
     46 // The import.meta object's prototype is null.
     47 assertEq(Object.getPrototypeOf(import.meta), null);
     48 
     49 import.meta.url = 0;
     50 assertEq(import.meta.url, 0);
     51 
     52 import.meta.newProp = 42;
     53 assertEq(import.meta.newProp, 42);
     54 
     55 let found = new Set(Reflect.ownKeys(import.meta));
     56 
     57 assertEq(found.size, 3);
     58 assertEq(found.has("url"), true);
     59 assertEq(found.has("newProp"), true);
     60 assertEq(found.has("resolve"), true);
     61 
     62 delete import.meta.url;
     63 delete import.meta.newProp;
     64 delete import.meta.resolve;
     65 
     66 found = new Set(Reflect.ownKeys(import.meta));
     67 assertEq(found.size, 0);