just-animate/lib.es2015/lib/utils/lists.js

_Making Animation Simple_

import { isArrayLike, isDefined } from './inspect';
import { _ } from './constants';
export function includes(items, item) {
    return getIndex(items, item) !== -1;
}
export function getIndex(items, item) {
    return items.indexOf(item);
}
export function find(indexed, predicate, reverse) {
    const ilen = indexed && indexed.length;
    if (!ilen) {
        return _;
    }
    if (predicate === _) {
        return indexed[reverse ? ilen - 1 : 0];
    }
    if (reverse) {
        for (let i = ilen - 1; i > -1; i--) {
            if (predicate(indexed[i])) {
                return indexed[i];
            }
        }
    }
    else {
        for (let i = 0; i < ilen; i++) {
            if (predicate(indexed[i])) {
                return indexed[i];
            }
        }
    }
    return _;
}
export function indexOf(items, predicate) {
    for (var i = 0, ilen = items.length; i < ilen; i++) {
        var item = items[i];
        if (predicate(item)) {
            return i;
        }
    }
    return -1;
}
export function remove(items, item) {
    const index = items.indexOf(item);
    return index !== -1 ? items.splice(index, 1) : _;
}
export function sortBy(fieldName) {
    return (a, b) => {
        const a1 = a[fieldName];
        const b1 = b[fieldName];
        return a1 < b1 ? -1 : a1 > b1 ? 1 : 0;
    };
}
export function list(indexed) {
    return !isDefined(indexed)
        ? []
        : isArrayLike(indexed)
            ? indexed
            : [indexed];
}
export function push(indexed, item) {
    if (item !== _) {
        Array.prototype.push.call(indexed, item);
    }
    return item;
}
export function pushDistinct(indexed, item) {
    if (!includes(indexed, item)) {
        push(indexed, item);
    }
    return item;
}
export function mapFlatten(items, mapper) {
    var results = [];
    all(items, item => {
        var result = mapper(item);
        if (isArrayLike(result)) {
            all(result, item2 => push(results, item2));
        }
        else {
            push(results, result);
        }
    });
    return results;
}
export function all(items, action) {
    const items2 = list(items);
    for (let i = 0, ilen = items2.length; i < ilen; i++) {
        action(items2[i], i, ilen);
    }
}