f619282af1
* Remove check narrowing only certain types, add test showing issues with this * string literal case test * Reconcile fix with CFA work * Defaultable -> NotNarrowable to align with use * Missed a defaultable in comments * Add test for narrowing to unions of string literals * Actually merge from master * Run fixupParentReferences when parsing isolated jsDocComment * initial revision of unit test support for project system in tsserver * Add non-widening forms of null and undefined * Create separate control flows for property declarations with initializers * Add regression test * Add tests * Remove unused variable * Add null check and CR feedback * Revert "Merge pull request #7235 from weswigham/narrow-all-types" This reverts commitef0f6c8fe4, reversing changes made to9f087cb62a. * reuse the fixupParentReferences function * Fix up error from merging with master
85 lines
1.7 KiB
Plaintext
85 lines
1.7 KiB
Plaintext
=== tests/cases/conformance/types/typeRelationships/widenedTypes/arrayLiteralWidened.ts ===
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// array literals are widened upon assignment according to their element type
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var a = []; // any[]
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>a : any[]
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>[] : undefined[]
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var a = [,,];
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>a : any[]
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>[,,] : undefined[]
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> : undefined
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> : undefined
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var a = [null, null];
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>a : any[]
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>[null, null] : null[]
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>null : null
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>null : null
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var a = [undefined, undefined];
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>a : any[]
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>[undefined, undefined] : undefined[]
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>undefined : undefined
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>undefined : undefined
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var b = [[], [null, null]]; // any[][]
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>b : any[][]
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>[[], [null, null]] : undefined[][]
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>[] : undefined[]
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>[null, null] : null[]
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>null : null
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>null : null
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var b = [[], []];
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>b : any[][]
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>[[], []] : undefined[][]
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>[] : undefined[]
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>[] : undefined[]
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var b = [[undefined, undefined]];
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>b : any[][]
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>[[undefined, undefined]] : undefined[][]
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>[undefined, undefined] : undefined[]
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>undefined : undefined
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>undefined : undefined
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var c = [[[]]]; // any[][][]
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>c : any[][][]
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>[[[]]] : undefined[][][]
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>[[]] : undefined[][]
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>[] : undefined[]
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var c = [[[null]],[undefined]]
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>c : any[][][]
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>[[[null]],[undefined]] : null[][][]
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>[[null]] : null[][]
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>[null] : null[]
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>null : null
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>[undefined] : undefined[]
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>undefined : undefined
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// no widening when one or more elements are non-widening
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var x: undefined = undefined;
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>x : undefined
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>undefined : undefined
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var d = [x];
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>d : undefined[]
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>[x] : undefined[]
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>x : undefined
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var d = [, x];
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>d : undefined[]
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>[, x] : undefined[]
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> : undefined
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>x : undefined
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var d = [undefined, x];
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>d : undefined[]
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>[undefined, x] : undefined[]
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>undefined : undefined
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>x : undefined
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