8f40ac06cc
* optimize transform of optional chaining and nullish coalescing * remove unnecessary condition * typo * fix lint * prevent capturing of super * swap branches again * accept new baselines * avoid temporary objects
23 lines
1.3 KiB
TypeScript
23 lines
1.3 KiB
TypeScript
//// [callChain.3.ts]
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declare function absorb<T>(): T;
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declare const a: { m?<T>(obj: {x: T}): T } | undefined;
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const n1: number = a?.m?.({x: 12 }); // should be an error (`undefined` is not assignable to `number`)
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const n2: number = a?.m?.({x: absorb()}); // likewise
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const n3: number | undefined = a?.m?.({x: 12}); // should be ok
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const n4: number | undefined = a?.m?.({x: absorb()}); // likewise
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// Also a test showing `!` vs `?` for good measure
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let t1 = a?.m?.({x: 12});
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t1 = a!.m!({x: 12});
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//// [callChain.3.js]
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"use strict";
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var _a, _b, _c, _d, _e;
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var n1 = (_a = a === null || a === void 0 ? void 0 : a.m) === null || _a === void 0 ? void 0 : _a.call(a, { x: 12 }); // should be an error (`undefined` is not assignable to `number`)
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var n2 = (_b = a === null || a === void 0 ? void 0 : a.m) === null || _b === void 0 ? void 0 : _b.call(a, { x: absorb() }); // likewise
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var n3 = (_c = a === null || a === void 0 ? void 0 : a.m) === null || _c === void 0 ? void 0 : _c.call(a, { x: 12 }); // should be ok
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var n4 = (_d = a === null || a === void 0 ? void 0 : a.m) === null || _d === void 0 ? void 0 : _d.call(a, { x: absorb() }); // likewise
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// Also a test showing `!` vs `?` for good measure
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var t1 = (_e = a === null || a === void 0 ? void 0 : a.m) === null || _e === void 0 ? void 0 : _e.call(a, { x: 12 });
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t1 = a.m({ x: 12 });
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