WeakMap-set-returns-this.js

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// Bug 1031632 - Map.prototype.set, WeakMap.prototype.set and

// Set.prototype.add should be chainable

var wm = new WeakMap();

var bar = {};

assertEq(wm.set(bar, 'BAR'), wm);

var foo = {};

var a = wm.set(foo, 'FOO').get(foo);

assertEq(a, 'FOO');