ng-keyboard-shortcuts
Version:
Dead Simple Keyboard Shortcuts Management for Angular 2+
80 lines • 8.51 kB
JavaScript
export function isFunction(x) {
return typeof x === 'function';
}
export function invert(obj) {
const new_obj = {};
for (const prop in obj) {
// eslint-disable-next-line no-prototype-builtins
if (obj.hasOwnProperty(prop)) {
new_obj[obj[prop]] = prop;
}
}
return new_obj;
}
export const any = (fn, list) => {
let idx = 0;
while (idx < list.length) {
if (fn(list[idx])) {
return true;
}
idx += 1;
}
return false;
};
export const identity = (x) => x;
/**
* @ignore
* @param x
* @returns boolean
*/
export const isNill = (x) => x == null;
/**
* @ignore
* @param xs
* @param key
* @returns any
*/
export function groupBy(xs, key) {
return xs.reduce((result, x) => ({
...result,
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
[x[key]]: [...(result[x[key]] || []), x]
}), {});
}
/**
* @ignore
* @param first
* @param second
* @returns any[]
*/
export const difference = (first, second) => first.filter(item => !second.includes(item));
/**
* @ignore
* @param preds
* @returns (...args) => boolean;
*/
export const allPass = preds => (...args) => {
let idx = 0;
const len = preds.length;
while (idx < len) {
if (!preds[idx].apply(this, args)) {
return false;
}
idx += 1;
}
return true;
};
export const prop = prop => object => object[prop];
export const minMaxArrayProp = type => (property, array) =>
// eslint-disable-next-line prefer-spread
Math[type].apply(Math, array.map(prop(property)));
export const maxArrayProp = (property, array) => {
return array.reduce((acc, curr) => {
const propFn = prop(property);
const currentValue = propFn(curr);
const previousValue = propFn(acc);
return currentValue > previousValue ? curr : acc;
}, { [property]: 0 });
};
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