data-transform-api
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Data transformation API — convert between JSON, CSV, XML. Flatten, filter, sort, pick fields, compute stats, and validate data. Zero dependencies beyond Express.
Quick Start
npm install && npm start # http://localhost:3600
Endpoints
Convert
# JSON → CSV
curl -X POST http://localhost:3600/api/v1/json-to-csv \
-H "Content-Type: application/json" \
-d '{"data": [{"name":"Alice","age":30},{"name":"Bob","age":25}]}'
# CSV → JSON
curl -X POST http://localhost:3600/api/v1/csv-to-json \
-H "Content-Type: application/json" \
-d '{"csv": "name,age\nAlice,30\nBob,25"}'
# JSON → XML
curl -X POST http://localhost:3600/api/v1/json-to-xml \
-H "Content-Type: application/json" \
-d '{"data": {"user": {"name": "Alice", "age": 30}}, "rootName": "response"}'
Transform
# Flatten nested JSON
curl -X POST http://localhost:3600/api/v1/flatten \
-H "Content-Type: application/json" \
-d '{"data": {"user": {"name": "Alice", "address": {"city": "Seoul"}}}}'
# → {"user.name": "Alice", "user.address.city": "Seoul"}
# Unflatten
curl -X POST http://localhost:3600/api/v1/unflatten \
-H "Content-Type: application/json" \
-d '{"data": {"user.name": "Alice", "user.age": 30}}'
# Filter (supports >, <, !)
curl -X POST http://localhost:3600/api/v1/filter \
-H "Content-Type: application/json" \
-d '{"data": [{"name":"Alice","age":30},{"name":"Bob","age":25}], "query": {"age": ">26"}}'
# Pick specific fields
curl -X POST http://localhost:3600/api/v1/pick \
-H "Content-Type: application/json" \
-d '{"data": [{"name":"Alice","age":30,"email":"a@b.c"}], "fields": ["name","age"]}'
# Sort
curl -X POST http://localhost:3600/api/v1/sort \
-H "Content-Type: application/json" \
-d '{"data": [{"name":"Bob","age":25},{"name":"Alice","age":30}], "field": "name"}'
# Stats
curl -X POST http://localhost:3600/api/v1/stats \
-H "Content-Type: application/json" \
-d '{"data": [{"score":85},{"score":92},{"score":78}], "field": "score"}'
# → {"count":3, "sum":255, "mean":85, "min":78, "max":92, "median":85}
# Validate JSON
curl -X POST http://localhost:3600/api/v1/validate \
-H "Content-Type: application/json" \
-d '{"data": {"valid": true}}'
License
MIT
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