primitive-assignment.js

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let primitives = [

10,

    false,

    "test",

    Symbol()

];

let key = "key";

for (let value of primitives) {

    // Doesn't throw outside strict mode.

    assertEq(value.x = 5, 5);

    assertEq(value[key] = 6, 6);

    assertThrowsInstanceOf(function() { "use strict"; value.x = 5; }, TypeError);

    assertThrowsInstanceOf(function() { "use strict"; value[key] = 6; }, TypeError);

    let target = {};

    assertEq(Reflect.set(target, key, 5, value), false);

    assertEq(key in target, false);

reportCompare(true, true);