npm-pkg: add page

pages/common/npm-pkg.md

@@ -0,0 +1,36 @@
+# npm pkg
+
+> Show or modify `package.json` properties.
+> More information: <https://docs.npmjs.com/cli/npm-pkg>.
+
+- Get the value of a specific property:
+
+`npm pkg get {{name}}`
+
+- Get multiple properties at once:
+
+`npm pkg get {{name}} {{version}}`
+
+- Get multiple values across all workspaces:
+
+`npm pkg get {{name}} {{version}} --ws`
+
+- Get a nested or array property value:
+
+`npm pkg get {{contributors[0].email}}`
+
+- Set a property to a specific value:
+
+`npm pkg set {{property}}={{value}}`
+
+- Set multiple properties at once:
+
+`npm pkg set {{property1}}={{value1}} {{property2}}={{value2}}`
+
+- Delete a property from `package.json`:
+
+`npm pkg delete {{scripts.build}}`
+
+- Auto-fix common errors in `package.json`:
+
+`npm pkg fix`