fastapi/frontend/modify-openapi-operationids.js

import * as fs from "node:fs";

async function modifyOpenAPIFile(filePath) {
	try {
		const data = await fs.promises.readFile(filePath);
		const openapiContent = JSON.parse(data);

		const paths = openapiContent.paths;
		for (const pathKey of Object.keys(paths)) {
			const pathData = paths[pathKey];
			for (const method of Object.keys(pathData)) {
				const operation = pathData[method];
				if (operation.tags && operation.tags.length > 0) {
					const tag = operation.tags[0];
					const operationId = operation.operationId;
					const toRemove = `${tag}-`;
					if (operationId.startsWith(toRemove)) {
						const newOperationId = operationId.substring(toRemove.length);
						operation.operationId = newOperationId;
					}
				}
			}
		}

		await fs.promises.writeFile(
			filePath,
			JSON.stringify(openapiContent, null, 2),
		);
		console.log("File successfully modified");
	} catch (err) {
		console.error("Error:", err);
	}
}

const filePath = "./openapi.json";
modifyOpenAPIFile(filePath);