The EINVALIDPACKAGENAME error occurs when attempting to install or reference a package with an invalid name. This could be a typo, incorrect scope format, or violation of naming rules.
This error indicates that a package name you're trying to use doesn't conform to npm's naming rules. This can happen when installing packages (typos in the name), when specifying dependencies, or when referencing local packages. The error can also occur with scoped packages if the scope format is incorrect, or with local file: dependencies if the path is invalid.
Verify the exact package name:
# Search for correct name
npm search lodash
# Check if package exists
npm view package-nameCommon typos to check:
# Check similar names
npm search "lodsah" # instead of lodash
# Look for similar packages
npm search package | headScoped packages need correct format:
# WRONG
npm install @scope_package
npm install @scope
# CORRECT
npm install @scope/packageFor local packages:
// WRONG
"dependencies": {
"my-pkg": "../my-pkg"
}
// CORRECT
"dependencies": {
"my-pkg": "file:../my-pkg"
}Check if name follows rules:
# Use validate-npm-package-name
npx validate-npm-package-name "the-name"Rules: lowercase, no spaces, URL-safe chars.
Review package.json dependencies:
# List all dependencies
npm pkg get dependencies
# Look for invalid entries
cat package.json | jq '.dependencies'When copying package names from documentation or websites, watch for hidden characters or smart quotes. Some packages have been renamed - check npm for current names. Scoped packages require authentication if the scope is private. Use npm ls to see the dependency tree and identify which dependency has the invalid name.
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