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DanielRosenwasserDanielRosenwasser
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Accepted baselines.
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‎tests/baselines/reference/contextualNarrowingFromUnknownToObjects(strictnullchecks=false).js

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//// [contextualNarrowingFromUnknownToObjects.ts]
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declare function keysOfEmptyObject(o: {}): string[];
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declare function keysOfNonPrimitive(o: object): string[];
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namespace explicitConstraints {
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export function keyLengthsEqualUsingEmptyObjectFn<T>(a: T, b: T): [T, T] | undefined {
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if (typeof a !== "object" || typeof b !== "object" || !a || !b) {
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return undefined;
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}
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if (Array.isArray(a) || Array.isArray(b)) {
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return undefined;
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}
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if (keysOfEmptyObject(a).length !== keysOfEmptyObject(b).length) {
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return [a, b];
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}
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return undefined;
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}
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export function keyLengthsEqualUsingNonPrimitiveFn<T>(a: T, b: T): [T, T] | undefined {
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if (typeof a !== "object" || typeof b !== "object" || !a || !b) {
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return undefined;
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}
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if (Array.isArray(a) || Array.isArray(b)) {
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return undefined;
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}
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if (keysOfEmptyObject(a).length !== keysOfEmptyObject(b).length) {
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return [a, b];
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}
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return undefined;
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}
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}
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// Explicit Constraints of 'unknown'
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namespace explicitConstraintsOfUnknown {
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export function keyLengthsEqualUsingEmptyObjectFn<T>(a: T, b: T): [T, T] | undefined {
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if (typeof a !== "object" || typeof b !== "object" || !a || !b) {
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return undefined;
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}
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if (Array.isArray(a) || Array.isArray(b)) {
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return undefined;
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}
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if (keysOfEmptyObject(a).length !== keysOfEmptyObject(b).length) {
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return [a, b];
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}
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return undefined;
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}
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export function keyLengthsEqualUsingNonPrimitiveFn<T>(a: T, b: T): [T, T] | undefined {
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if (typeof a !== "object" || typeof b !== "object" || !a || !b) {
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return undefined;
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}
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if (Array.isArray(a) || Array.isArray(b)) {
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return undefined;
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}
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if (keysOfEmptyObject(a).length !== keysOfEmptyObject(b).length) {
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return [a, b];
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}
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return undefined;
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}
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}
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//// [contextualNarrowingFromUnknownToObjects.js]
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var explicitConstraints;
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(function (explicitConstraints) {
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function keyLengthsEqualUsingEmptyObjectFn(a, b) {
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if (typeof a !== "object" || typeof b !== "object" || !a || !b) {
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return undefined;
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}
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if (Array.isArray(a) || Array.isArray(b)) {
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return undefined;
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}
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if (keysOfEmptyObject(a).length !== keysOfEmptyObject(b).length) {
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return [a, b];
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}
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return undefined;
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}
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explicitConstraints.keyLengthsEqualUsingEmptyObjectFn = keyLengthsEqualUsingEmptyObjectFn;
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function keyLengthsEqualUsingNonPrimitiveFn(a, b) {
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if (typeof a !== "object" || typeof b !== "object" || !a || !b) {
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return undefined;
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}
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if (Array.isArray(a) || Array.isArray(b)) {
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return undefined;
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}
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if (keysOfEmptyObject(a).length !== keysOfEmptyObject(b).length) {
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return [a, b];
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}
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return undefined;
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}
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explicitConstraints.keyLengthsEqualUsingNonPrimitiveFn = keyLengthsEqualUsingNonPrimitiveFn;
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})(explicitConstraints || (explicitConstraints = {}));
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// Explicit Constraints of 'unknown'
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var explicitConstraintsOfUnknown;
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(function (explicitConstraintsOfUnknown) {
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function keyLengthsEqualUsingEmptyObjectFn(a, b) {
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if (typeof a !== "object" || typeof b !== "object" || !a || !b) {
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return undefined;
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}
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if (Array.isArray(a) || Array.isArray(b)) {
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return undefined;
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}
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if (keysOfEmptyObject(a).length !== keysOfEmptyObject(b).length) {
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return [a, b];
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}
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return undefined;
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}
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explicitConstraintsOfUnknown.keyLengthsEqualUsingEmptyObjectFn = keyLengthsEqualUsingEmptyObjectFn;
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function keyLengthsEqualUsingNonPrimitiveFn(a, b) {
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if (typeof a !== "object" || typeof b !== "object" || !a || !b) {
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return undefined;
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}
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if (Array.isArray(a) || Array.isArray(b)) {
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return undefined;
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}
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if (keysOfEmptyObject(a).length !== keysOfEmptyObject(b).length) {
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return [a, b];
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}
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return undefined;
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}
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explicitConstraintsOfUnknown.keyLengthsEqualUsingNonPrimitiveFn = keyLengthsEqualUsingNonPrimitiveFn;
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})(explicitConstraintsOfUnknown || (explicitConstraintsOfUnknown = {}));

‎tests/baselines/reference/contextualNarrowingFromUnknownToObjects(strictnullchecks=false).symbols

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=== tests/cases/compiler/contextualNarrowingFromUnknownToObjects.ts ===
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declare function keysOfEmptyObject(o: {}): string[];
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>keysOfEmptyObject : Symbol(keysOfEmptyObject, Decl(contextualNarrowingFromUnknownToObjects.ts, 0, 0))
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>o : Symbol(o, Decl(contextualNarrowingFromUnknownToObjects.ts, 0, 35))
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declare function keysOfNonPrimitive(o: object): string[];
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>keysOfNonPrimitive : Symbol(keysOfNonPrimitive, Decl(contextualNarrowingFromUnknownToObjects.ts, 0, 52))
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>o : Symbol(o, Decl(contextualNarrowingFromUnknownToObjects.ts, 1, 36))
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namespace explicitConstraints {
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>explicitConstraints : Symbol(explicitConstraints, Decl(contextualNarrowingFromUnknownToObjects.ts, 1, 57))
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export function keyLengthsEqualUsingEmptyObjectFn<T>(a: T, b: T): [T, T] | undefined {
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>keyLengthsEqualUsingEmptyObjectFn : Symbol(keyLengthsEqualUsingEmptyObjectFn, Decl(contextualNarrowingFromUnknownToObjects.ts, 3, 31))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 4, 54))
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 4, 57))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 4, 54))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 4, 62))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 4, 54))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 4, 54))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 4, 54))
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if (typeof a !== "object" || typeof b !== "object" || !a || !b) {
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 4, 57))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 4, 62))
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 4, 57))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 4, 62))
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return undefined;
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>undefined : Symbol(undefined)
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}
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if (Array.isArray(a) || Array.isArray(b)) {
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>Array.isArray : Symbol(ArrayConstructor.isArray, Decl(lib.es5.d.ts, --, --))
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>Array : Symbol(Array, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --) ... and 3 more)
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>isArray : Symbol(ArrayConstructor.isArray, Decl(lib.es5.d.ts, --, --))
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 4, 57))
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>Array.isArray : Symbol(ArrayConstructor.isArray, Decl(lib.es5.d.ts, --, --))
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>Array : Symbol(Array, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --) ... and 3 more)
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>isArray : Symbol(ArrayConstructor.isArray, Decl(lib.es5.d.ts, --, --))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 4, 62))
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return undefined;
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>undefined : Symbol(undefined)
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}
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if (keysOfEmptyObject(a).length !== keysOfEmptyObject(b).length) {
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>keysOfEmptyObject(a).length : Symbol(Array.length, Decl(lib.es5.d.ts, --, --))
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>keysOfEmptyObject : Symbol(keysOfEmptyObject, Decl(contextualNarrowingFromUnknownToObjects.ts, 0, 0))
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 4, 57))
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>length : Symbol(Array.length, Decl(lib.es5.d.ts, --, --))
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>keysOfEmptyObject(b).length : Symbol(Array.length, Decl(lib.es5.d.ts, --, --))
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>keysOfEmptyObject : Symbol(keysOfEmptyObject, Decl(contextualNarrowingFromUnknownToObjects.ts, 0, 0))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 4, 62))
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>length : Symbol(Array.length, Decl(lib.es5.d.ts, --, --))
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return [a, b];
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 4, 57))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 4, 62))
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}
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return undefined;
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>undefined : Symbol(undefined)
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}
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export function keyLengthsEqualUsingNonPrimitiveFn<T>(a: T, b: T): [T, T] | undefined {
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>keyLengthsEqualUsingNonPrimitiveFn : Symbol(keyLengthsEqualUsingNonPrimitiveFn, Decl(contextualNarrowingFromUnknownToObjects.ts, 15, 5))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 17, 55))
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 17, 58))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 17, 55))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 17, 63))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 17, 55))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 17, 55))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 17, 55))
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if (typeof a !== "object" || typeof b !== "object" || !a || !b) {
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 17, 58))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 17, 63))
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 17, 58))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 17, 63))
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return undefined;
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>undefined : Symbol(undefined)
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}
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if (Array.isArray(a) || Array.isArray(b)) {
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>Array.isArray : Symbol(ArrayConstructor.isArray, Decl(lib.es5.d.ts, --, --))
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>Array : Symbol(Array, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --) ... and 3 more)
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>isArray : Symbol(ArrayConstructor.isArray, Decl(lib.es5.d.ts, --, --))
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 17, 58))
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>Array.isArray : Symbol(ArrayConstructor.isArray, Decl(lib.es5.d.ts, --, --))
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>Array : Symbol(Array, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --) ... and 3 more)
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>isArray : Symbol(ArrayConstructor.isArray, Decl(lib.es5.d.ts, --, --))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 17, 63))
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return undefined;
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>undefined : Symbol(undefined)
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}
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if (keysOfEmptyObject(a).length !== keysOfEmptyObject(b).length) {
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>keysOfEmptyObject(a).length : Symbol(Array.length, Decl(lib.es5.d.ts, --, --))
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>keysOfEmptyObject : Symbol(keysOfEmptyObject, Decl(contextualNarrowingFromUnknownToObjects.ts, 0, 0))
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 17, 58))
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>length : Symbol(Array.length, Decl(lib.es5.d.ts, --, --))
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>keysOfEmptyObject(b).length : Symbol(Array.length, Decl(lib.es5.d.ts, --, --))
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>keysOfEmptyObject : Symbol(keysOfEmptyObject, Decl(contextualNarrowingFromUnknownToObjects.ts, 0, 0))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 17, 63))
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>length : Symbol(Array.length, Decl(lib.es5.d.ts, --, --))
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return [a, b];
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 17, 58))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 17, 63))
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}
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return undefined;
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>undefined : Symbol(undefined)
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}
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}
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// Explicit Constraints of 'unknown'
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namespace explicitConstraintsOfUnknown {
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>explicitConstraintsOfUnknown : Symbol(explicitConstraintsOfUnknown, Decl(contextualNarrowingFromUnknownToObjects.ts, 29, 1))
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export function keyLengthsEqualUsingEmptyObjectFn<T>(a: T, b: T): [T, T] | undefined {
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>keyLengthsEqualUsingEmptyObjectFn : Symbol(keyLengthsEqualUsingEmptyObjectFn, Decl(contextualNarrowingFromUnknownToObjects.ts, 32, 40))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 33, 54))
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 33, 57))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 33, 54))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 33, 62))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 33, 54))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 33, 54))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 33, 54))
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if (typeof a !== "object" || typeof b !== "object" || !a || !b) {
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 33, 57))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 33, 62))
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 33, 57))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 33, 62))
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return undefined;
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>undefined : Symbol(undefined)
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}
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if (Array.isArray(a) || Array.isArray(b)) {
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>Array.isArray : Symbol(ArrayConstructor.isArray, Decl(lib.es5.d.ts, --, --))
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>Array : Symbol(Array, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --) ... and 3 more)
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>isArray : Symbol(ArrayConstructor.isArray, Decl(lib.es5.d.ts, --, --))
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 33, 57))
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>Array.isArray : Symbol(ArrayConstructor.isArray, Decl(lib.es5.d.ts, --, --))
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>Array : Symbol(Array, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --) ... and 3 more)
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>isArray : Symbol(ArrayConstructor.isArray, Decl(lib.es5.d.ts, --, --))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 33, 62))
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return undefined;
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>undefined : Symbol(undefined)
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}
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if (keysOfEmptyObject(a).length !== keysOfEmptyObject(b).length) {
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>keysOfEmptyObject(a).length : Symbol(Array.length, Decl(lib.es5.d.ts, --, --))
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>keysOfEmptyObject : Symbol(keysOfEmptyObject, Decl(contextualNarrowingFromUnknownToObjects.ts, 0, 0))
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 33, 57))
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>length : Symbol(Array.length, Decl(lib.es5.d.ts, --, --))
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>keysOfEmptyObject(b).length : Symbol(Array.length, Decl(lib.es5.d.ts, --, --))
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>keysOfEmptyObject : Symbol(keysOfEmptyObject, Decl(contextualNarrowingFromUnknownToObjects.ts, 0, 0))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 33, 62))
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>length : Symbol(Array.length, Decl(lib.es5.d.ts, --, --))
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return [a, b];
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 33, 57))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 33, 62))
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}
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return undefined;
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>undefined : Symbol(undefined)
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}
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export function keyLengthsEqualUsingNonPrimitiveFn<T>(a: T, b: T): [T, T] | undefined {
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>keyLengthsEqualUsingNonPrimitiveFn : Symbol(keyLengthsEqualUsingNonPrimitiveFn, Decl(contextualNarrowingFromUnknownToObjects.ts, 44, 5))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 46, 55))
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 46, 58))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 46, 55))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 46, 63))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 46, 55))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 46, 55))
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>T : Symbol(T, Decl(contextualNarrowingFromUnknownToObjects.ts, 46, 55))
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if (typeof a !== "object" || typeof b !== "object" || !a || !b) {
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 46, 58))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 46, 63))
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 46, 58))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 46, 63))
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return undefined;
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>undefined : Symbol(undefined)
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}
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if (Array.isArray(a) || Array.isArray(b)) {
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>Array.isArray : Symbol(ArrayConstructor.isArray, Decl(lib.es5.d.ts, --, --))
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>Array : Symbol(Array, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --) ... and 3 more)
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>isArray : Symbol(ArrayConstructor.isArray, Decl(lib.es5.d.ts, --, --))
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 46, 58))
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>Array.isArray : Symbol(ArrayConstructor.isArray, Decl(lib.es5.d.ts, --, --))
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>Array : Symbol(Array, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --) ... and 3 more)
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>isArray : Symbol(ArrayConstructor.isArray, Decl(lib.es5.d.ts, --, --))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 46, 63))
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return undefined;
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>undefined : Symbol(undefined)
199+
}
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if (keysOfEmptyObject(a).length !== keysOfEmptyObject(b).length) {
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>keysOfEmptyObject(a).length : Symbol(Array.length, Decl(lib.es5.d.ts, --, --))
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>keysOfEmptyObject : Symbol(keysOfEmptyObject, Decl(contextualNarrowingFromUnknownToObjects.ts, 0, 0))
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 46, 58))
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>length : Symbol(Array.length, Decl(lib.es5.d.ts, --, --))
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>keysOfEmptyObject(b).length : Symbol(Array.length, Decl(lib.es5.d.ts, --, --))
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>keysOfEmptyObject : Symbol(keysOfEmptyObject, Decl(contextualNarrowingFromUnknownToObjects.ts, 0, 0))
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>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 46, 63))
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>length : Symbol(Array.length, Decl(lib.es5.d.ts, --, --))
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return [a, b];
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>a : Symbol(a, Decl(contextualNarrowingFromUnknownToObjects.ts, 46, 58))
212+
>b : Symbol(b, Decl(contextualNarrowingFromUnknownToObjects.ts, 46, 63))
213+
}
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return undefined;
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>undefined : Symbol(undefined)
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}
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}
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