Function getChainTypes

packages/node/src/utils/project.ts:38–62

(
  reader: Reader,
  root: string,
  file: string,
)

}

export async function getChainTypes(
  reader: Reader,
  root: string,
  file: string,
): Promise<ChainTypes> {
  // If the project is load from local, we will direct load them
  let raw: unknown;
  if (reader instanceof LocalReader) {
    raw = loadChainTypes(file, root);
  } else {
    // If it is stored in ipfs or other resources, we will use the corresponding reader to read the file
    // Because ipfs not provide extension of the file, it is difficult to determine its format
    // We will use yaml.load to try to load the script and parse them to supported chain types
    // if it failed, we will give it another attempt, and assume the script written in js
    // we will download it to a temp folder, and load them within sandbox
    const res = await reader.getFile(file);
    try {
      raw = yaml.load(res);
    } catch (e) {
      const chainTypesPath = await saveFile(reader, root, file, res);
      raw = loadChainTypesFromJs(chainTypesPath); //root not required, as it been packed in single js
    }
  }
  return parseChainTypes(raw);
}

export function loadChainTypes(file: string, projectRoot: string): unknown {
  const { ext } = path.parse(file);