How to delete all nested keys with JQ - json

Question

I would like to delete all the resloved from a npm shrinwrap json file. this is causing a problem when running npm install on other machine.
"cssstyle": {
"version": "0.2.37",
"from": "cssstyle#>=0.2.29 <0.3.0",
"resolved": "https://registry.npmjs.org/cssstyle/-/cssstyle-0.2.37.tgz"
},
"dashdash": {
"version": "1.14.0",
"from": "dashdash#>=1.12.0 <2.0.0",
"resolved": "https://registry.npmjs.org/dashdash/-/dashdash-1.14.0.tgz",
"dependencies": {
"assert-plus": {
"version": "1.0.0",
"from": "assert-plus#>=1.0.0 <2.0.0",
"resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz"
}
}
},
"debug": {
"version": "2.2.0",
"from": "debug#>=2.2.0 <3.0.0",
"resolved": "https://registry.npmjs.org/debug/-/debug-2.2.0.tgz"
}
How can I delete the resolved key from all the file
I'm using the pattern :
jq 'del(.resolved)' file.json

Answer 1

In my opinion, the simplest approach to this kind of problem is to use walk/1:
walk(if type == "object" and has("resolved") then del(.resolved) else . end)
If your jq does not have walk/1 (which was only included as a builtin after the release of jq 1.5), then simply add its definition (easily available on the web) before the above line, or perhaps include it in your ~/.jq file.