74 lines
2.0 KiB
Plaintext
74 lines
2.0 KiB
Plaintext
// Jest Snapshot v1, https://goo.gl/fbAQLP
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exports[`array.js 1`] = `
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// @flow
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function foo(x: Array<number>): [number, ?number] {
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return x; // Error, can't enforce arity when flowing array to tuple
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}
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function foo(x: Array<number>): [number, ?number] {
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return [x[0], x[1]]; // OK. This is unsound, but at least arity is enforced
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}
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// @flow
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function foo(x: Array<number>): [number, ?number] {
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return x; // Error, can't enforce arity when flowing array to tuple
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}
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function foo(x: Array<number>): [number, ?number] {
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return [x[0], x[1]]; // OK. This is unsound, but at least arity is enforced
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}
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`;
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exports[`optional.js 1`] = `
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// @flow
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([0, undefined]: [number, ?string]); // Ok, correct arity
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([0]: [number, ?string]); // Error, arity is enforced
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([]: [?number, string]); // error, since second element is not marked optional
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// @flow
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([0, undefined]: [number, ?string]); // Ok, correct arity
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([0]: [number, ?string]); // Error, arity is enforced
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([]: [?number, string]); // error, since second element is not marked optional
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`;
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exports[`too-few.js 1`] = `
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/* @flow */
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function foo(a: [Object, Object]) {}
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foo([ {} ]); // error, too few elements in array passed to a tuple
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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/* @flow */
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function foo(a: [Object, Object]) {}
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foo([{}]); // error, too few elements in array passed to a tuple
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`;
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exports[`tuples.js 1`] = `
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var a: [] = [];
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var b: [] = [123]; // Error - arity mismatch
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var c: [number] = []; // nope
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var d: [number, string] = [123,'duck'];
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var e: [number, string,] = [123,'duck'];
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var f: [number, string] = [123, 456];
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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var a: [] = [];
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var b: [] = [123]; // Error - arity mismatch
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var c: [number] = []; // nope
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var d: [number, string] = [123, "duck"];
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var e: [number, string] = [123, "duck"];
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var f: [number, string] = [123, 456];
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`;
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