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import fs from "fs-extra";
import path from "path";
import { TransformerResults } from "../runner";
import getTransformerHelpers from "../utils/getTransformerHelpers";
import type { TransformerArgs } from "../types";
// transformer details
const TRANSFORMER = "create-turbo-config";
const DESCRIPTION =
'Create the `turbo.json` file from an existing "turbo" key in `package.json`';
const INTRODUCED_IN = "1.1.0";
export function transformer({
root,
options,
}: TransformerArgs): TransformerResults {
const { log, runner } = getTransformerHelpers({
transformer: TRANSFORMER,
rootPath: root,
options,
});
log.info(`Migrating "package.json" "turbo" key to "turbo.json" file...`);
const turboConfigPath = path.join(root, "turbo.json");
const rootPackageJsonPath = path.join(root, "package.json");
if (!fs.existsSync(rootPackageJsonPath)) {
return runner.abortTransform({
reason: `No package.json found at ${root}. Is the path correct?`,
});
}
// read files
const rootPackageJson = fs.readJsonSync(rootPackageJsonPath);
let rootTurboJson = null;
try {
rootTurboJson = fs.readJSONSync(turboConfigPath);
} catch (err) {
rootTurboJson = null;
}
// modify files
let transformedPackageJson = rootPackageJson;
let transformedTurboConfig = rootTurboJson;
if (!rootTurboJson && rootPackageJson["turbo"]) {
const { turbo: turboConfig, ...remainingPkgJson } = rootPackageJson;
transformedTurboConfig = turboConfig;
transformedPackageJson = remainingPkgJson;
}
runner.modifyFile({
filePath: turboConfigPath,
after: transformedTurboConfig,
});
runner.modifyFile({
filePath: rootPackageJsonPath,
after: transformedPackageJson,
});
return runner.finish();
}
const transformerMeta = {
name: `${TRANSFORMER}: ${DESCRIPTION}`,
value: TRANSFORMER,
introducedIn: INTRODUCED_IN,
transformer,
};
export default transformerMeta;
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