a7bddc02ba
`??=` is being merged into the Logical Assignment Operator proposal, and the overall proposal will wait until nullish coalescing is finalized.
49 lines
1.5 KiB
JavaScript
49 lines
1.5 KiB
JavaScript
var _obj$x, _obj$x2, _deep$obj, _x, _deep$obj2, _x2, _ref, _obj, _ref2, _obj2, _deep$obj3, _ref3, _ref4, _deep$obj4, _ref5, _ref6;
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var x = undefined;
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var sets = 0;
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var obj = {
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get x() {
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return x;
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},
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set x(value) {
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sets++;
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x = value;
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}
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};
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assert.equal((_obj$x = obj.x) !== null && _obj$x !== void 0 ? _obj$x : obj.x = 1, 1);
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assert.equal(sets, 1);
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assert.equal((_obj$x2 = obj.x) !== null && _obj$x2 !== void 0 ? _obj$x2 : obj.x = 2, 1);
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assert.equal(sets, 1);
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var gets = 0;
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var deep = {
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get obj() {
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gets++;
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return obj;
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}
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};
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obj.x = undefined;
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assert.equal((_x = (_deep$obj = deep.obj).x) !== null && _x !== void 0 ? _x : _deep$obj.x = 1, 1);
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assert.equal(gets, 1);
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assert.equal((_x2 = (_deep$obj2 = deep.obj).x) !== null && _x2 !== void 0 ? _x2 : _deep$obj2.x = 2, 1);
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assert.equal(gets, 2);
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var key = 0;
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obj.x = undefined;
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assert.equal((_obj = obj[_ref = ++key]) !== null && _obj !== void 0 ? _obj : obj[_ref] = 1, 1);
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assert.equal(key, 1);
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key = 0;
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assert.equal((_obj2 = obj[_ref2 = ++key]) !== null && _obj2 !== void 0 ? _obj2 : obj[_ref2] = 2, 1);
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assert.equal(key, 1);
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obj.x = undefined;
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key = 0;
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assert.equal((_ref4 = (_deep$obj3 = deep.obj)[_ref3 = ++key]) !== null && _ref4 !== void 0 ? _ref4 : _deep$obj3[_ref3] = 1, 1);
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assert.equal(gets, 3);
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assert.equal(key, 1);
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key = 0;
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assert.equal((_ref6 = (_deep$obj4 = deep.obj)[_ref5 = ++key]) !== null && _ref6 !== void 0 ? _ref6 : _deep$obj4[_ref5] = 2, 1);
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assert.equal(gets, 4);
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assert.equal(key, 1);
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