metamorphosi/build/compact.js

Transform jsons using templates

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.compact = void 0;
function isObject(val) {
    return Object === val.constructor;
}
function compact($, keysThatMustExist = [], dropValues = [undefined], keep = false) {
    if (Array.isArray($)) {
        const enhancedDropValues = [...dropValues, '$keep'];
        let keepEmpty = false;
        $ = $.filter(o => {
            if (o === '$keep')
                keepEmpty = true;
            return enhancedDropValues.indexOf(o) === -1;
        });
        if ($.length === 0 && keepEmpty)
            return $;
        if ($.length > 0)
            return $;
    }
    else if ($ && isObject($)) {
        if ((keysThatMustExist === null || keysThatMustExist === void 0 ? void 0 : keysThatMustExist.length) > 0) {
            for (let key of keysThatMustExist) {
                if (dropValues.indexOf($[key]) !== -1)
                    return;
            }
        }
        const newObj = {};
        for (key in $) {
            if (dropValues.indexOf($[key]) === -1)
                newObj[key] = $[key];
        }
        if (keep)
            return newObj;
        for (var key in newObj) {
            if (dropValues.indexOf($[key]) === -1)
                return newObj;
        }
    }
    else if (dropValues.indexOf($) === -1) {
        return $;
    }
}
exports.compact = compact;
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