> ## Documentation Index > Fetch the complete documentation index at: https://docs.commonality.co/llms.txt > Use this file to discover all available pages before exploring further. # null A project configuration file is a `config.json` file located in the `.commonality` folder at the root of your project. ```json .commonality/config.json theme={null} { "$schema": "https://commonality.co/config.json", "checks": { "*": ["has-readme"], "publishable": ["ensure-license"] }, "constraints": { "*": { "disallow": ["deployable"] }, "config": { "allow": ["config"] } } } ``` ## Properties ### checks An object whose keys are [selectors](/selectors) and whose values are paths to [check objects](/reference/check-object). Checks will run in the order they are defined. ```json .commonality/config.json theme={null} { "checks": { "*": [ // Path to a check local to the project "has-readme", "./has-readme", "./linting/eslint-extends-node", // Path to a custom check exported from a package "@scope/my-team/my-custom-check", "commonality-checks-recommended/sorted-dependencies" // Packages prefixed with "commonality-checks-" can use a shorthand "recommended/sorted-dependencies" ], } } ``` ### constraints An object whose keys are [selectors](/selectors) and whose value are [constraint objects](/reference/constraint-object). ```json .commonality/config.json theme={null} { "constraints": { "*": { "disallow": ["deployable"] }, "config": { "allow": ["config"] } } } ``` *** ### `workspaces` An array of [micromatch](https://github.com/micromatch/micromatch) patterns used to identify which directories should be included when searching for packages. ```json .commonality/config.json theme={null} { "workspaces": ["apps/*", "packages/**", "!**/dist/**"] } ```