How do I add comments to package.json for npm install?
I've got a simple package.json file and I want to add a comment. Is there a way to do this, or are there any hacks to make this work?
{
"name": "My Project",
"version": "0.0.1",
"private": true,
"dependencies": {
"express": "3.x",
"mongoose": "3.x"
},
"devDependencies" : {
"should": "*"
/* "mocha": "*" not needed as should be globally installed */
}
}
The example comment above doesn't work as npm breaks. I've also tried // style comments.
This has recently been discussed in the node.js mailing list.
According to Isaac Schlueter who created npm:
... the "//" key will never be used by npm for any purpose, and is reserved for comments ... If you want to use a multiple line comment, you can use either an array, or multiple "//" keys.
{ "//": "this is the first line of a comment",
"//": "this is the second line of the comment" }
{ "//": [
"first line",
"second line" ] }
Here is another hack for adding comments in JSON. Since:
{"a": 1, "a": 2}
Is equivalent to
{"a": 2}
You can do something like:
{
"devDependencies": "'mocha' not needed as should be globally installed",
"devDependencies" : {
"should": "*"
}
}
After wasting an hour on complex and hacky solutions I've found myself a pretty simple, elegant and valid solution for commenting my bulky dependencies section in package.json . Just like this:
{
"name": "package name",
"version": "1.0",
"description": "package description",
"scripts": {
"start": "npm install && node server.js"
},
"scriptsComments": {
"start": "Runs development build on a local server configured by server.js"
},
"dependencies": {
"ajv": "^5.2.2"
},
"dependenciesComments": {
"ajv": "JSON-Schema Validator for validation of API data"
}
}
When sorted the same way, it's now very easy for me to track these pairs of dependencies/comments either in git commit diffs or in editor while working with package.json .
And no extra tools involved, just plain and valid JSON.
Hope this helps anyone.
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