In the realm of Angular decorators, the metadata.json file serves as a blueprint, outlining the structure of the metadata in the form of an abstract syntax tree (AST). When the AOT collector embarks on its analysis journey, it meticulously examines the metadata encapsulated within the Angular decorators. The result of this scrutiny is the generation of metadata information, which is then diligently saved in .metadata.json files. These files are created on a one-to-one basis for each corresponding .d.ts file, ensuring a systematic and organized compilation of metadata.
In conclusion, the metadata.json file plays a pivotal role in understanding the intricate design of Angular decorators’ metadata. The AOT collector’s process of analyzing and subsequently recording this information in individual .metadata.json files ensures a streamlined and efficient approach to handling and categorizing metadata for each .d.ts file. This systematic method not only underscores the importance of metadata management but also highlights the sophistication of Angular’s architecture.