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remove every spread operator

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Either using the code from before the ts-refactors or writing something that will match both our runtime targets and still provides type/ide support by using type overloads
This commit is contained in:
Lukas Tetzlaff 2017-11-03 23:21:53 +01:00
parent 4670dcf33e
commit 987972854e
1 changed files with 20 additions and 9 deletions
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29
source/index.ts
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@ -166,7 +166,8 @@ namespace is { // tslint:disable-line:no-namespace
}
if (array(range) && range.length === 2) {
return value >= Math.min(...range) && value <= Math.max(...range);
// TODO: Use spread operator here when targeting Node.js 6 or higher
return value >= Math.min.apply(null, range) && value <= Math.max.apply(null, range);
}
throw new TypeError(`Invalid range: ${util.inspect(range)}`);
@ -199,7 +200,12 @@ namespace is { // tslint:disable-line:no-namespace
export const emptyOrWhitespace = (value: any) => empty(value) || isWhiteSpaceString(value);
type ArrayMethod = (fn: (value: any, index: number, arr: any[]) => boolean, thisArg?: any) => boolean;
const predicateOnArray = (method: ArrayMethod, predicate: any, values: any[]) => {
const predicateOnArray = (method: ArrayMethod, predicate: any, args: IArguments) => {
// `args` is the calling function's "arguments object".
// We have to do it this way to keep node v4 support.
// So here we convert it to an array and slice off the first item.
const values = Array.prototype.slice.call(args, 1);
if (function_(predicate) === false) {
throw new TypeError(`Invalid predicate: ${util.inspect(predicate)}`);
}
@ -211,14 +217,19 @@ namespace is { // tslint:disable-line:no-namespace
return method.call(values, predicate);
};
// tslint:disable-next-line:variable-name
export const any = (predicate: any, ...values: any[]) => {
return predicateOnArray(Array.prototype.some, predicate, values);
};
// We can't use rest parameters in node v4 due to the lack of the spread operator.
// Therefore We have to use anonymous functions for the any() and all() methods
// tslint:disable:only-arrow-functions no-function-expression
export function any(...predicate: any[]): any; // tslint:disable-line:variable-name
export function any(predicate: any) {
return predicateOnArray(Array.prototype.some, predicate, arguments);
}
export const all = (predicate: any, ...values: any[]) => {
return predicateOnArray(Array.prototype.every, predicate, values);
};
export function all(...predicate: any[]): any;
export function all(predicate: any) {
return predicateOnArray(Array.prototype.every, predicate, arguments);
}
// tslint:enable:only-arrow-functions no-function-expression
}
// Some few keywords are reserved, but we'll populate them for the node-folks