custom-string-formatter/dist/resolver.js

Customizable String Formatter

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.resolveProperty = resolveProperty;
/**
 * Parses a property and resolves its value from an object.
 *
 * It supports `this` as the first name to reference the object itself.
 */
function resolveProperty(path, obj) {
    const nameList = path.split('.').filter(a => a);
    let exists = false, value = obj;
    const ctx = { path, parent: undefined };
    for (const [i, n] of nameList.entries()) {
        if (!i && n === 'this') {
            exists = true;
            continue;
        }
        if (value === null || value === undefined || !(n in value)) {
            return { exists: false, ctx: { path, parent: undefined } };
        }
        exists = true;
        ctx.parent = value;
        value = value[n];
    }
    return exists ? { exists, value, ctx } : { exists, ctx };
}