Christopher Chedeau
cf45afba61
- This brings in the flow test suite that contains a ton of JavaScript parsing edge cases - This creates snapshot tests using the pretty printer for all of them - If uncomment `RUN_AST_TESTS` line in `tests/run_specs.js`, it checks ast(pretty_print(x)) == ast(x). Right now, "178 failed, 197 passed, 375 of 377 total". So half of the tests are not passing, most of them are crashes and many of the rest are subtle issues.
22 lines
726 B
JavaScript
22 lines
726 B
JavaScript
var APIKeys = require('./enum');
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// object that maps "AGE" to "age", "NAME" to "name"
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function foo(x: $Keys<typeof APIKeys>) { }
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foo("AGE");
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foo("LOCATION"); // error
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function bar(x: $Keys<{age: number}>) { }
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bar(APIKeys.AGE); // not an error: APIKeys.AGE = "age"
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bar(APIKeys.NAME); // error: since "NAME" is not in the smaller enum
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var object = {};
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object[APIKeys.AGE] = 123; // i.e., object.age = 123
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object[APIKeys.NAME] = "FOO"; // i.e., object.name = "FOO"
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var age:number = object[APIKeys.AGE];
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var name:number = object[APIKeys.NAME]; // error: object.name is a string
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var indices = { red: 0, green: 1, blue: 2 };
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var tuple = [42, "hello", false];
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var red:string = tuple[indices.red]; // error: tuple[0] is a number
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