Appreciation for Great Tools and Learning Journey in Effect

let match = null;
const result = [];

while (null !== (match = depsRegex.exec(input))) {
  const dep = match[2];

  if (!dep.startsWith('./') && !dep.startsWith('../')) {
    result.push(dep);
  }
}

const getExternalImports = (fileContent: string) =>
  pipe(
    Effect.sync(() => depsRegex.exec(fileContent)),
    Effect.flatMap((firstMatch) =>
      Effect.loop(firstMatch, {
        step: () => depsRegex.exec(fileContent),
        while: (newMatch) => newMatch !== null,
        body: (match) => {
          if (!match) {
            return Effect.succeed(null);
          }

          const dep = match[2];
          if (!dep.startsWith('./') && !dep.startsWith('../')) {
            return Effect.succeed(dep);
          }

          return Effect.succeed(null);
        },
      }),
    ),
    Effect.map((imports) => imports.filter((i) => i !== null) as string[]),
  );