yarn.config.cjs

// @ts-check

/**
 * @type {import('@yarnpkg/types')}
 * @typedef {import('@yarnpkg/types').Yarn.Constraints.Context} Context
 */
const { defineConfig } = require(`@yarnpkg/types`);

/**
 * This rule will enforce that a workspace MUST depend on the same version of
 * a dependency as the one used by the other workspaces.
 *
 * See: https://yarnpkg.com/features/constraints
 *
 * @param {Context} context
 */
function enforceConsistentDependenciesAcrossTheProject({ Yarn }) {
  for (const dependency of Yarn.dependencies()) {
    if (dependency.type === `peerDependencies`) {
      continue;
    }

    for (const otherDependency of Yarn.dependencies({ ident: dependency.ident })) {
      if (otherDependency.type === `peerDependencies`) {
        continue;
      }

      dependency.update(otherDependency.range);
    }
  }
}

module.exports = defineConfig({
  constraints: async (ctx) => {
    enforceConsistentDependenciesAcrossTheProject(ctx);
  },
});