create-bfe-cttq/packages/cli/util/mergePackage.js

CTTQ大前端脚手架项目

const { isFunction, isObject, isString} = require("./shared");
const mergeDeps = require("./mergeDeps")
const deepmerge = require("./deepMerge")
const { mergeArrayWithDedupe } = require("./deepMerge");

function pruneObject (obj) {
    if (typeof obj === 'object') {
        for (const k in obj) {
            if (!Object.prototype.hasOwnProperty.call(obj, k)) {
                continue
            }
            if (obj[k] == null) {
                delete obj[k]
            } else {
                obj[k] = pruneObject(obj[k])
            }
        }
    }
    return obj
}

module.exports = (flag, pkg, toMerge, conflictDepSources, options = {}) => {
    const extendOptions = {
        prune: false,
        merge: true,
        warnIncompatibleVersions: true,
        forceOverwrite: false
    }
    if (typeof options === 'boolean') {
        extendOptions.warnIncompatibleVersions = !options
    } else {
        Object.assign(extendOptions, options)
    }
    for (const key in toMerge) {
        const value = toMerge[key]
        const existing = pkg[key]
        if (isObject(value) && (key === 'dependencies' || key === 'devDependencies')) {
            // use special version resolution merge
            pkg[key] = mergeDeps(
                flag,
                existing || {},
                value,
                conflictDepSources,
                extendOptions
            )
        } else if (!extendOptions.merge || !(key in pkg)) {
            pkg[key] = value
        } else if (Array.isArray(value) && Array.isArray(existing)) {
            pkg[key] = mergeArrayWithDedupe(existing, value)
        } else if (isObject(value) && isObject(existing)) {
            pkg[key] = deepmerge(existing, value, { arrayMerge: mergeArrayWithDedupe })
        } else {
            pkg[key] = value
        }
    }
    if (extendOptions.prune) {
        pruneObject(pkg)
    }
}