Code generation, debugging and documentation
127 prompts
Generate TypeScript types from this JSON. JSON sample(s): ```json [paste] ``` Create interfaces with sensible names, mark optional and nullable fields, use union types for known string values, and also create a Zod schema for runtime validation. Note any fields where the sample is ambiguous.
Generate accurate TypeScript interfaces and validation schemas from sample JSON.
Write a [Python / Node.js] script to transform data. Input format and sample: [paste] Desired output format and sample: [paste] Rules: [renames, filters, calculations, date formats] The script should read from a file, handle missing or malformed values, log problems, write the output file, and be easy to rerun. Includ…
Convert, clean and reshape data between JSON, CSV and other formats with a reusable script.
You are a Python developer. Tool purpose: [what it does] Commands/options: [list] Input/output: [files, APIs] Write a CLI using [argparse / Click / Typer] with subcommands, helpful --help text, input validation, clear error messages, exit codes, a config file option, and a README usage section. Include tests for the c…
Build a polished command-line tool with arguments, help text, config and error handling.
Act as a QA-minded backend engineer. Framework and test tool: [e.g. Jest + Supertest, pytest + httpx, PHPUnit] Endpoints: [list with expected behaviour] Auth: [method] Database setup: [test DB, fixtures] Write integration tests covering success cases, validation errors, auth failures and not-found cases, with setup/te…
Test your API endpoints end to end, including the database, auth and error responses.
You are a test automation engineer. App: [URL/type] Critical user journeys: [e.g. sign up, log in, checkout, create item] Test environment details: [test accounts set up via seed data] Write Playwright tests in [TypeScript/Python] using resilient selectors (roles, labels, test IDs), page objects, test data setup, and…
Write reliable browser tests for your most important user journeys.
Review the code below and improve its logging and error handling. Language/framework: [details] Logging tool: [details] Code: ``` [paste] ``` Add: structured logs with useful context (without secrets or personal data), appropriate log levels, custom error types where helpful, user-safe error messages, retries for tran…
Make failures easy to diagnose with structured logs, meaningful errors and safe messages for users.
You are a senior engineer onboarding me to a codebase. Project description: [what it does] Folder structure: [paste tree] Key files (paste the most important ones): [paste] Explain: the overall architecture, how a typical request/action flows through the code, the role of each main folder, important patterns and conve…
Get oriented in a new repository: architecture, key files, data flow and where to start.
Act as a backend developer. Framework/tool: [Laravel, Django, Rails, Prisma, Alembic, raw SQL] Database: [PostgreSQL/MySQL] Change needed: [e.g. add column, rename table, split a field] Table size: [rows] Write the up and down migration, any data backfill, how to deploy it safely without downtime (e.g. expand-and-cont…
Create safe, reversible migrations for schema changes, including data backfills.
Act as a Git expert helping a [beginner / intermediate] developer. My situation: [e.g. I committed to main instead of a feature branch / I need to undo my last push / merge conflict in two files] Output of git status: ``` [paste] ``` Have I pushed? [yes / no] Working alone or in a team? [alone / team] Give me: 1. What…
Describe your Git situation in plain words, from undoing a commit to fixing a merge, and get the safe commands to resolve it.
Act as a data analyst using Python and pandas. Data: [file type and columns with example values] Questions I want answered: [list] Issues I know about: [missing values, inconsistent formats] Write a script or notebook steps to: 1. Load and inspect the data 2. Clean it (types, missing values, duplicates, outliers) 3. A…
Load, clean, analyse and chart your data with pandas, with explanations for each step.
Act as a coding mentor. What I want to learn: [language/framework] My experience: [none / other languages] Goal: [job, side project, data analysis, game dev] Time: [hours per week] Create a 12-week roadmap: weekly topics, key concepts, one small project per week, free resources to look for (types, not specific links i…
A structured, project-based learning path for any language or framework, matched to your goals and available time.
You are a senior engineer conducting a system design interview. System: [e.g. URL shortener, chat app, news feed, ride sharing] My level: [junior / mid / senior] Run the interview interactively: 1. Ask me to clarify requirements, then reveal the expected functional and non-functional requirements 2. Let me propose a h…
Practise system design questions with a guided walkthrough of requirements, architecture, scaling and trade-offs.