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// META: global=window,dedicatedworker,jsshell,shadowrealm
// META: script=/wasm/jsapi/wasm-module-builder.js
let emptyModuleBinary;
setup(() => {
emptyModuleBinary = new WasmModuleBuilder().toBuffer();
});
test(() => {
const thisValues = [
undefined,
null,
true,
"",
Symbol(),
1,
{},
WebAssembly.Instance,
WebAssembly.Instance.prototype,
];
const desc = Object.getOwnPropertyDescriptor(WebAssembly.Instance.prototype, "exports");
assert_equals(typeof desc, "object");
const getter = desc.get;
assert_equals(typeof getter, "function");
assert_equals(typeof desc.set, "undefined");
for (const thisValue of thisValues) {
assert_throws_js(TypeError, () => getter.call(thisValue), `this=${format_value(thisValue)}`);
}
}, "Branding");
test(() => {
const module = new WebAssembly.Module(emptyModuleBinary);
const instance = new WebAssembly.Instance(module);
const exports = instance.exports;
const desc = Object.getOwnPropertyDescriptor(WebAssembly.Instance.prototype, "exports");
assert_equals(typeof desc, "object");
const getter = desc.get;
assert_equals(typeof getter, "function");
assert_equals(getter.call(instance, {}), exports);
}, "Stray argument");
test(() => {
const module = new WebAssembly.Module(emptyModuleBinary);
const instance = new WebAssembly.Instance(module);
const exports = instance.exports;
instance.exports = {};
assert_equals(instance.exports, exports, "Should not change the exports");
}, "Setting (sloppy mode)");
test(() => {
const module = new WebAssembly.Module(emptyModuleBinary);
const instance = new WebAssembly.Instance(module);
const exports = instance.exports;
assert_throws_js(TypeError, () => {
"use strict";
instance.exports = {};
});
assert_equals(instance.exports, exports, "Should not change the exports");
}, "Setting (strict mode)");
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