59 lines
1.4 KiB
TypeScript
59 lines
1.4 KiB
TypeScript
export function leftPad(str: string | number, length: number, fill = '0') {
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let current = String(str);
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while (current.length < length) {
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current = `${fill}${str}`;
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}
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return current;
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}
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export const tuple = <T extends string[]>(...args: T) => args;
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export function toArray<T>(val: T | T[]): T[] {
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if (val === null || val === undefined) {
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return [];
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}
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return Array.isArray(val) ? val : [val];
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}
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export default function getDataOrAriaProps(props: any) {
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const retProps: any = {};
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Object.keys(props).forEach(key => {
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if (
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(key.substr(0, 5) === 'data-' ||
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key.substr(0, 5) === 'aria-' ||
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key === 'role' ||
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key === 'name') &&
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key.substr(0, 7) !== 'data-__'
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) {
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retProps[key] = props[key];
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}
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});
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return retProps;
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}
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export function getValue<T>(values: null | undefined | (T | null)[], index: number): T | null {
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return values ? values[index] : null;
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}
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type UpdateValue<T> = (prev: T) => T;
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export function updateValues<T, R = [T | null, T | null] | null>(
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values: [T | null, T | null] | null,
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value: T | UpdateValue<T>,
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index: number,
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): R {
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const newValues: [T | null, T | null] = [getValue(values, 0), getValue(values, 1)];
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newValues[index] =
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typeof value === 'function' ? (value as UpdateValue<T | null>)(newValues[index]) : value;
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if (!newValues[0] && !newValues[1]) {
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return null as unknown as R;
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}
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return newValues as unknown as R;
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}
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