Function moduleChanges

packages/tools/api-diff/src/Diff.ts:346–397

(base: ApiSnapshot, head: ApiSnapshot)

}

const moduleChanges = (base: ApiSnapshot, head: ApiSnapshot): ReadonlyArray<ApiChange> => {
  const changes: Array<ApiChange> = []
  const basePackages = new Set(base.packages)
  const headPackages = new Set(head.packages)
  for (const packageName of basePackages) {
    if (!headPackages.has(packageName)) {
      changes.push({
        id: `change-${fingerprint(["package-removed", packageName]).slice(0, 16)}`,
        classification: "package-removed",
        confidence: 1,
        delta: { packageName },
        authoritative: true
      })
    }
  }
  for (const packageName of headPackages) {
    if (!basePackages.has(packageName)) {
      changes.push({
        id: `change-${fingerprint(["package-added", packageName]).slice(0, 16)}`,
        classification: "package-added",
        confidence: 1,
        delta: { packageName },
        authoritative: true
      })
    }
  }
  const baseModules = new Set(base.entrypoints.map((entrypoint) => entrypoint.module))
  const headModules = new Set(head.entrypoints.map((entrypoint) => entrypoint.module))
  for (const module of baseModules) {
    if (!headModules.has(module)) {
      changes.push({
        id: `change-${fingerprint(["module-removed", module]).slice(0, 16)}`,
        classification: "module-removed",
        confidence: 1,
        delta: { from: module, to: [] },
        authoritative: true
      })
    }
  }
  for (const module of headModules) {
    if (!baseModules.has(module)) {
      changes.push({
        id: `change-${fingerprint(["module-added", module]).slice(0, 16)}`,
        classification: "module-added",
        confidence: 1,
        delta: { to: [module] },
        authoritative: true
      })
    }
  }
  return changes
}

export const diffSnapshots = (base: ApiSnapshot, head: ApiSnapshot): ApiDiff => {
  const unmatchedBase = new Map(base.entities.map((entity) => [entity.id, entity]))