@kbn/dependency-usage

A CLI tool for analyzing dependencies across packages and plugins. This tool provides commands to check dependency usage, aggregate it, debug dependency graphs, and more.

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Table of Contents

1. Show all packages/plugins using a dependency
2. Show dependencies grouped by code owner
3. List all dependencies for a package or directory
4. Group by code owner with adjustable collapse depth
5. Show dependencies matching a pattern
6. Verbose flag to debug dependency graph issues

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1. Show all packages/plugins using a specific dependency

Use this command to list all packages or plugins within a directory that use a specified dependency.

bash scripts/dependency_usage.sh -d <dependency> -p <path_to_directory>

or

bash scripts/dependency_usage.sh --dependency-name <dependency> --paths <path_to_directory>

Example:

bash scripts/dependency_usage.sh -d rxjs -p x-pack/solutions/security/plugins/security_solution

• -d rxjs: Specifies the dependency to look for (rxjs).
• -p x-pack/solutions/security/plugins/security_solution: Sets the directory to search within (x-pack/solutions/security/plugins/security_solution).

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2. Show dependencies grouped by code owner

Group the dependencies used within a directory by code owner.

bash scripts/dependency_usage.sh -p <path_to_directory> -g owner

or

bash scripts/dependency_usage.sh --paths <path_to_directory> --group-by owner

Example:

bash scripts/dependency_usage.sh -p x-pack/plugins -g owner

• -p x-pack/plugins: Sets the directory to scan for plugins using this dependency.
• -g owner: Groups results by code owner.
• Output: Lists all dependencies for x-pack/plugins, organized by code owner.

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3. List all dependencies for source directory

To display all dependencies used within a specific directory.

bash scripts/dependency_usage.sh -p <path_to_directory>

or

bash scripts/dependency_usage.sh --paths <path_to_directory>

Example:

bash scripts/dependency_usage.sh -p x-pack/solutions/security/plugins/security_solution

• -p x-pack/solutions/security/plugins/security_solution: Specifies the package or directory for which to list all dependencies.
• Output: Lists all dependencies for x-pack/solutions/security/plugins/security_solution.

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4. Group by code owner with adjustable collapse depth

When a package or plugin has multiple subteams, use the --collapse-depth option to control how granular the grouping by code owner should be.

Detailed Subteam Grouping

Shows all subteams within security_solution.

bash scripts/dependency_usage.sh -p x-pack/solutions/security/plugins/security_solution -g owner --collapse-depth 4

Collapsed Grouping

Groups the results under a higher-level owner (e.g., security_solution as a single group).

bash scripts/dependency_usage.sh -p x-pack/solutions/security/plugins/security_solution -g owner --collapse-depth 1

Explanation:

• -p x-pack/solutions/security/plugins/security_solution: Specifies the directory to scan.
• -g owner: Groups results by code owner.
• --collapse-depth: Defines the depth for grouping, where higher numbers show more granular subteams.
• Output: Lists dependencies grouped by code owner at different levels of depth based on the --collapse-depth value.

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5. Show dependencies matching a pattern

Search for dependencies that match a specific pattern (such as react-*) within a package and output the results to a specified file.

bash scripts/dependency_usage.sh -p <path_to_directory> -d '<pattern>' -o <output_file>

Example:

bash scripts/dependency_usage.sh -d 'react-*' -p x-pack/solutions/security/plugins/security_solution -o ./tmp/results.json

• -p x-pack/solutions/security/plugins/security_solution: Specifies the directory or package to search within.
• -d 'react-*': Searches for dependencies that match the pattern react-*.
• -o ./tmp/results.json: Outputs the results to a specified file (results.json in the ./tmp directory).
• Output: Saves a list of all dependencies matching react-* in x-pack/solutions/security/plugins/security_solution to ./tmp/results.json.

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6. Verbose flag to debug dependency graph issues

Enable verbose mode to log additional details for debugging dependency graphs. This includes generating a non-aggregated dependency graph in .dependency-graph-log.json.

bash scripts/dependency_usage.sh -p <path_to_directory> -o <output_file> -v

Example:

bash scripts/dependency_usage.sh -p x-pack/solutions/security/plugins/security_solution -o ./tmp/results.json

• -p x-pack/solutions/security/plugins/security_solution: Specifies the target directory or package to analyze.
• -o ./tmp/results.json: Saves the output to the results.json file in the ./tmp directory.
• -v: Enables verbose mode.

Output: Saves a list of all dependencies in x-pack/solutions/security/plugins/security_solution to ./tmp/results.json. Additionally, it logs a detailed, non aggregated dependency graph to .dependency-graph-log.json for debugging purposes.

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For further information on additional flags and options, refer to the script's help command.