Programmatic API

The package root exports exactly CodeGenerator and DEFAULT_CONFIG_PATH. The executable is separately exposed as the fetcher-generator binary. Do not import internal AggregateResolver, ModelGenerator, GenerateContext, ConsoleLogger, setupCLI, parser helpers or internal option types from the package root or undocumented subpaths.

CodeGenerator

Member	Parameters/defaults	Return and effects
constructor(options)	Required inputPath:string, outputDir:string, logger; optional configPath and ts-morph ProjectOptions including tsConfigFilePath	Creates an internal Project synchronously; invalid project options may throw
generate()	No arguments	Promise<void>; loads spec/config, resolves aggregates, writes models/clients/indexes, formats and saves owned output
generateIndex(directory)	Required ts-morph Directory	void; recursively creates/replaces index.ts exports in the internal project; does not save by itself
optimizeSourceFiles(directory)	Required Directory	void; formats, organizes/fixes imports; during generation filters to recorded generated files; does not save
DEFAULT_CONFIG_PATH	Constant	./fetcher-generator.config.json

The internal Project is private. The last two methods are public orchestration helpers with a Directory argument, not a separate persistence API. Normal applications should call generate(). There is no close/dispose, cancellation signal, watch method, or structured diagnostics return. Avoid concurrent generate() calls on the same instance/output directory; there is no locking contract.

Complete script

The logger must implement all five methods. ConstructorParameters obtains the supported option shape without importing an unexported name.

import { CodeGenerator } from '@ahoo-wang/fetcher-generator';

type Options = ConstructorParameters<typeof CodeGenerator>[0];
const logger: Options['logger'] = {
  info: console.log,
  success: console.log,
  error: console.error,
  progress: (message, level = 0) => console.log(level, message),
  progressWithCount: (current, total, message) =>
    console.log(current, total, message),
};
const generator = new CodeGenerator({
  inputPath: './openapi.json',
  outputDir: './src/generated',
  tsConfigFilePath: './tsconfig.json',
  logger,
});
try {
  await generator.generate();
} catch (error) {
  console.error('Generation failed', error);
  process.exitCode = 1;
}

DEFAULT_CONFIG_PATH — packages/generator/src/index.ts:35

CodeGenerator — packages/generator/src/index.ts:53