@aws-cdk/core/lib/util.js

AWS Cloud Development Kit Core Library

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const intrinsic_1 = require("./private/intrinsic");
const stack_1 = require("./stack");
/**
 * Given an object, converts all keys to PascalCase given they are currently in camel case.
 * @param obj The object.
 */
function capitalizePropertyNames(construct, obj) {
    const stack = stack_1.Stack.of(construct);
    obj = stack.resolve(obj);
    if (typeof (obj) !== 'object') {
        return obj;
    }
    if (Array.isArray(obj)) {
        return obj.map(x => capitalizePropertyNames(construct, x));
    }
    const newObj = {};
    for (const key of Object.keys(obj)) {
        const value = obj[key];
        const first = key.charAt(0).toUpperCase();
        const newKey = first + key.slice(1);
        newObj[newKey] = capitalizePropertyNames(construct, value);
    }
    return newObj;
}
exports.capitalizePropertyNames = capitalizePropertyNames;
/**
 * Turns empty arrays/objects to undefined (after evaluating tokens).
 */
function ignoreEmpty(obj) {
    return new PostResolveToken(obj, o => {
        // undefined/null
        if (o == null) {
            return o;
        }
        if (Array.isArray(o) && o.length === 0) {
            return undefined;
        }
        if (typeof (o) === 'object' && Object.keys(o).length === 0) {
            return undefined;
        }
        return o;
    });
}
exports.ignoreEmpty = ignoreEmpty;
/**
 * Returns a copy of `obj` without `undefined` (or `null`) values in maps or arrays.
 */
function filterUndefined(obj) {
    if (Array.isArray(obj)) {
        return obj.filter(x => x != null).map(x => filterUndefined(x));
    }
    if (typeof (obj) === 'object') {
        const ret = {};
        for (const [key, value] of Object.entries(obj)) {
            if (value == null) {
                continue;
            }
            ret[key] = filterUndefined(value);
        }
        return ret;
    }
    return obj;
}
exports.filterUndefined = filterUndefined;
/**
 * A Token that applies a function AFTER resolve resolution
 */
class PostResolveToken extends intrinsic_1.Intrinsic {
    constructor(value, processor) {
        super(value);
        this.processor = processor;
    }
    resolve(context) {
        context.registerPostProcessor(this);
        return super.resolve(context);
    }
    postProcess(o, _context) {
        return this.processor(o);
    }
}
exports.PostResolveToken = PostResolveToken;
/**
 * @returns the list of stacks that lead from the top-level stack (non-nested) all the way to a nested stack.
 */
function pathToTopLevelStack(s) {
    if (s.nestedStackParent) {
        return [...pathToTopLevelStack(s.nestedStackParent), s];
    }
    else {
        return [s];
    }
}
exports.pathToTopLevelStack = pathToTopLevelStack;
/**
 * Given two arrays, returns the last common element or `undefined` if there
 * isn't (arrays are foriegn).
 */
function findLastCommonElement(path1, path2) {
    let i = 0;
    while (i < path1.length && i < path2.length) {
        if (path1[i] !== path2[i]) {
            break;
        }
        i++;
    }
    return path1[i - 1];
}
exports.findLastCommonElement = findLastCommonElement;
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