合并两个属性相似的bower.json文件（合并两个属性相似的JSON文件）答案

【问题标题】：Merging two bower.json files with similar attributes (merging two JSON files with similar attributes)合并两个属性相似的bower.json文件（合并两个属性相似的JSON文件）
【发布时间】：2015-05-22 14:51:18
【问题描述】：

我想合并两个 bower.json 文件。一个是我的项目本地的，另一个是在不同项目之间共享的。在运行 bower install 之前，我需要合并这两个文件。

请查看示例以了解我的要求：

本地 bower.json

{
    "name": "myLocalProject",
    "version": "0.0.1",
    "devDependencies": {
        "angular": "1.1.0"
    },
    "dependencies": {
       "components-font-awesome": "*"
    },
    "resolutions": {
        "angular": "1.3.15"
    }
}

和共享的 bower.json

{
    "name": "sharedBowerFile",
    "version": "0.0.3",
    "devDependencies": {
        "angular": "1.3.15",
        "angular-resource": "1.3.15"
    },
    "dependencies": {

    },
    "resolutions": {
        "angular": "1.3.15"
    }
}

结果 bower.json 将替换本地 bower.json

{
        "name": "myLocalProject",           // unchanged
        "version": "0.0.1",                 // unchanged
        "devDependencies": {
            "angular": "1.3.15",             //version updated
            "angular-resource": "1.3.15"     // added to local
        },
        "dependencies": {
            "components-font-awesome": "*"   //stays the same in local
        },
        "resolutions": {
            "angular": "1.3.15"                 
        }
    }

我将为合并创建一个 Grunt 任务，因此我需要在 JavaScript 中进行合并。

【问题讨论】：

stackoverflow.com/a/383245/2506594 这就是您想要做的吗？你可以只加载两个 json 文件，合并，然后再次字符串化？
不，这不起作用。检查我的例子

标签： javascript json gruntjs bower

【解决方案1】：

好的，我自己写的函数：

var mergeJSON = function (local, shared) {
    var check = true;
    for(var i in shared ) {
        if(typeof(shared[i]) == 'object') {
            for(var j in shared[i]) {
                check =true;
                for (var z in local[i]) {
                    if(j == z){
                        check = false;
                            if( cmp(shared[i][j], local[i][j])>0 ) {
                            //For upgrading the version of dependencies from shared to local
                            grunt.log.writeln("Updating local " + j + " from " + local[i][j] + " to >" + shared[i][j]);
                            local[i][j] = shared[i][j];
                            }else if(cmp(shared[i][j], local[i][j])<0){
                                grunt.log.writeln(j + " in shared bower.json " + " is " + shared[i][j] + " and older than local version " + local[i][j]);

                            }
                    }
                }
                if(check){
                    //add the dependency if does not exist in local
                    local[i][j] = shared[i][j];
                    grunt.log.writeln("Added dependency: " + j + ": " + local[i][j] );
                }
            }
        }
    }
    return JSON.stringify(local,null,4);
};

还有我的 Grunt 任务：

 grunt.task.registerTask('merge','A task to merge local and shared bower.json file', function(){

            var shared = grunt.file.readJSON("/path/to/sharedJSON");
            var local = grunt.file.readJSON("bower.json");
            grunt.file.write('bower.json',mergeJSON(local,shared));
    });

运行：

$ grunt merge

【讨论】：