How to Resolve Upstream Dependency Conflicts While Installing Vue-Mapbox and Mapbox-gl with NPM?

Resolving Upstream Dependency Conflicts During NPM Package Installation

When attempting to install Vue-Mapbox and Mapbox-gl packages using npm, an error message may arise indicating an upstream dependency conflict. This issue often occurs when installing multiple packages that rely on different versions of the same dependency, leading to a conflict in the dependency tree.

Understanding the Error

The error message typically includes the following details:

• error ERESOLVE unable to resolve dependency tree
• peer mapbox-gl@... from vue-mapbox@...
• Could not resolve dependency: peer mapbox-gl@... from...

This message suggests that npm is unable to resolve the version conflict between Mapbox-gl dependency versions required by Vue-Mapbox and the version installed in the project.

Solution

To resolve this conflict and successfully install the packages, try the following solution:

Use --legacy-peer-deps Flag

The --legacy-peer-deps flag allows npm to resolve peer dependencies using the same rules as previous npm versions. This flag instructs npm to ignore any conflicting peer dependencies and install the packages with the versions specified in the package.json file.

To use this flag, run the following command:

npm install --legacy-peer-deps vue-mapbox mapbox-gl

Blog Post Reference

For more detailed information on this specific issue and the --legacy-peer-deps flag, refer to the blog post:

• [npm v7 Series - Beta Release! And: SemVer-Major Changes in npm v7](https://blog.npmjs.org/post/197118149846/npm-v7-series-beta-release-and-semver-major-changes)

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