How filter & format a json in node.js? - node.js

Question

I want to format a JSON object in my Nodejs server. Delete some fields, rename some fields, and move some fields.
I have many different schemas need to apply to many different JSON, so I hope has a lib that can parse a configuration file and to it.
Maybe a configuration file like this:
DELETE request.logid
DELETE request.data.*.time
MOVE request.data.images data.images
And a JSON before applies an above schema:
{
"request": {
"data": {
"book": {
"name": "Hello World",
"time": 1546269044490
},
"images": [
"a-book.jpg"
]
},
"logid": "a514-afe1f0a2ac02_DCSix"
}
}
After applied:
{
"request": {
"data": {
"book": {
"name": "Hello World"
}
}
},
"data": {
"images": [
"a-book.jpg"
]
}
}
Where is the lib it is?
I know that write a function can do the same thing directly, but the problem is I have too many different schemas and too many different JSON, so I wanna manage them by configuration file rather than a js function.

Answer 1

Yes you could do something like this...
// Note: psuedocode
// Read the configuration file;
const commands = (await readFile('config')).split('\r\n').split(' ');
// your original JSON;
const obj = {...};
// Modify the JSON given the commands
commands.forEach( row=>{
if(row[0]==="DELETE"){
delete obj[row[1]];
}else if(row[0]==="MOVE"){
// use lodash to make your life easier.
_.set(obj,`${row[2]}`,_.get(obj,`${row[1]}`));
delete obj[row[1]];
}else if(...){
...
}
})