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Copy pathannot.js
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60 lines (44 loc) · 1.72 KB
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function foo(str:string, i:number):string {
return str;
}
var bar: (str:number, i:number)=> string = foo;
var qux = function(str:string, i:number):number { return foo(str,i); }
var obj: {str:string; i:number; j:boolean} = {str: "...", i: "...", k: false};
var arr: Array<number> = [1,2,"..."];
// array sugar
var array: number[] = [1,2,"..."];
var matrix: number[][] = [[1,2],[3,4]];
var matrix_parens: (number[])[] = matrix;
var nullable_array: ?number[] = null;
var nullable_array_parens: ?(number[]) = nullable_array;
var array_of_nullable: (?number)[] = [null, 3];
var array_of_tuple: [number, string][] = [[0, "foo"], [1, "bar"]];
var array_of_tuple_parens: ([number, string])[] = array_of_tuple;
type ObjType = { 'bar-foo': string; 'foo-bar': number; };
var test_obj: ObjType = { 'bar-foo': '23' };
// param type annos are strict UBs like var type annos
function param_anno(n:number):void {
n = "hey"; // error
}
// another error on param UB, more typical of www (mis)use-cases
// this one cribbed from API.atlas.js
function param_anno2(
batchRequests: Array<{method: string; path: string; params: ?Object}>,
): void {
// error below, since we're assigning elements to batchRequests
// which lack a path property.
// just assign result to new var instead of reassigning to param.
// Transform the requests to the format the Graph API expects.
batchRequests = batchRequests.map((request) => {
return {
method: request.method,
params: request.params,
relative_url: request.path,
};
});
// ...
}
var toz : null = 3;
var zer : null = null;
function foobar(n : ?number) : number | null | void { return n; }
function barfoo(n : number | null | void) : ?number { return n; }