protected findSubmodule()

in src/docgen/transpile/transpile.ts [748:778]

• 21 lines of code
• 5 McCabe index (conditional complexity)

  protected findSubmodule(type: reflect.Type): reflect.Submodule | undefined {

    if (this.submodulesCache.has(type.fqn)) {
      return this.submodulesCache.get(type.fqn);
    }

    let submodule = undefined;
    if (type.namespace) {
      // if the type is in a submodule, the submodule name is the first
      // part of the namespace. we construct the full submodule fqn and search for it.
      const submoduleFqn = `${type.assembly.name}.${type.namespace.split('.')[0]}`;
      const submodules = type.assembly.submodules.filter(
        (s) => s.fqn === submoduleFqn,
      );

      if (submodules.length > 1) {
        // can never happen, but the array data structure forces this handling.
        throw new Error(`Found multiple submodulues with fqn ${submoduleFqn}`);
      }

      if (submodules.length === 0) {
        submodule = undefined;
      }

      // type is inside this submodule.
      submodule = submodules[0];
    }

    this.submodulesCache.set(type.fqn, submodule);
    return submodule;
  }