import gensync, { type Handler } from "gensync";
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import loadConfig from "./config";
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import type { InputOptions, ResolvedConfig } from "./config";
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import { run } from "./transformation";
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import type { FileResult, FileResultCallback } from "./transformation";
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import * as fs from "./gensync-utils/fs";
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type transformFileBrowserType = typeof import("./transform-file-browser");
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type transformFileType = typeof import("./transform-file");
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// Kind of gross, but essentially asserting that the exports of this module are the same as the
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// exports of transform-file-browser, since this file may be replaced at bundle time with
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// transform-file-browser.
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({} as any as transformFileBrowserType as transformFileType);
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const transformFileRunner = gensync(function* (
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filename: string,
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opts?: InputOptions,
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): Handler<FileResult | null> {
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const options = { ...opts, filename };
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const config: ResolvedConfig | null = yield* loadConfig(options);
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if (config === null) return null;
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const code = yield* fs.readFile(filename, "utf8");
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return yield* run(config, code);
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});
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// @ts-expect-error TS doesn't detect that this signature is compatible
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export function transformFile(
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filename: string,
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callback: FileResultCallback,
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): void;
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export function transformFile(
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filename: string,
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opts: InputOptions | undefined | null,
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callback: FileResultCallback,
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): void;
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export function transformFile(
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...args: Parameters<typeof transformFileRunner.errback>
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) {
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return transformFileRunner.errback(...args);
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}
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export function transformFileSync(
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...args: Parameters<typeof transformFileRunner.sync>
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) {
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return transformFileRunner.sync(...args);
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}
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export function transformFileAsync(
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...args: Parameters<typeof transformFileRunner.async>
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) {
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return transformFileRunner.async(...args);
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}
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