@ts-dev-tools/core/dist/services/PackageJsonMerge.js

TS dev tools Core

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.PackageJsonMerge = void 0;
class PackageJsonMerge {
    constructor() { }
    static merge(source, update) {
        return PackageJsonMerge.mergeObjects(source, update);
    }
    static mergeValues(source, update) {
        if (source === undefined) {
            return update;
        }
        if (!PackageJsonMerge.typesEqual(source, update)) {
            throw new Error(`Unable to merge package json value because types are different`);
        }
        // Deal with arrays
        if (Array.isArray(update)) {
            return PackageJsonMerge.mergeArrays(source, update);
        }
        // Deal with objects
        if (typeof update === "object") {
            return PackageJsonMerge.mergeObjects(source, update);
        }
        return update;
    }
    static mergeObjects(source, update) {
        for (const updateKey in update) {
            if (!Object.hasOwn(update, updateKey)) {
                continue;
            }
            const updateValue = update[updateKey];
            const sourceValue = Object.hasOwn(source, updateKey)
                ? source[updateKey]
                : undefined;
            source[updateKey] = PackageJsonMerge.mergeValues(sourceValue, updateValue);
        }
        return source;
    }
    static mergeArrays(source, update) {
        for (const item of update) {
            if (!source.includes(item)) {
                source.push(item);
            }
        }
        return source;
    }
    static typesEqual(sourceValue, updateValue) {
        if (Array.isArray(sourceValue) && !Array.isArray(updateValue)) {
            return false;
        }
        return typeof sourceValue === typeof updateValue;
    }
}
exports.PackageJsonMerge = PackageJsonMerge;