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@walmartlabs/json-to-simple-graphql-schema
Advanced tools
Converts a JSON object into a GraphQL schema
Transforms JSON input into a GraphQL schema. Try it here
Let's say you want to use an existing REST API in a GraphQL service and expose the data that API provides. You'll need to expose that data in a GraphQL schema. Without this tool, you'll have to slog through the JSON response and manually extract and convert the relevant types to GraphQL schema types. This tool attempts to provide an automated reasonable first-pass at that effort.
For use as a command-line app use npx
:) If you'd really like to install, you can do:
npm i -g @walmartlabs/json-to-simple-graphql-schema
For use in a project:
npm i @walmartlabs/json-to-simple-graphql-schema
Pipe in some JSON. Here's a cURL JSON response piped in to this app:
curl "https://data.cityofnewyork.us/api/views/kku6-nxdu/rows.json?accessType=DOWNLOAD" \
| npx @walmartlabs/json-to-simple-graphql-schema
You'll still need to rename the resulting main Type in the schema, unless you like
AutogeneratedMainType
:)
Or pipe in some JSON from a JSON file.
curl https://data.cityofnewyork.us/api/views/kku6-nxdu/rows.json?accessType=DOWNLOAD > input.json
cat input.json | npx json-to-simple-graphql-schema > output.graphql
Optional parameters:
curl https://data.cityofnewyork.us/api/views/kku6-nxdu/rows.json?accessType=DOWNLOAD > input.json
cat input.json | npx json-to-simple-graphql-schema --baseType BaseType --prefix Prefix > output.graphql
import { jsonToSchema } from "@walmartlabs/json-to-simple-graphql-schema/lib";
const schema = jsonToSchema({ jsonInput: '{"name": "Test"}' });
console.log(schema.value);
If you need more guidance, have a look at the source for our simple web-ui.
Given this JSON:
{
"id": "some-id-0",
"name": "A fun object",
"subType": {
"id": "some-id-1",
"name": "A fun sub-type"
}
}
This app will send this to stdout:
type SubType {
id: String
name: String,
}
type AutogeneratedMainType {
id: String
name: String
subType: SubType
}
Consider this JSON with 2 color
types:
{
"id": "some-id-0",
"name": "A fun object",
"color": {
"id": "color-id-1",
"name": "Test color"
},
"subType": {
"id": "some-id-1",
"name": "A fun sub-type",
"color": {
"id": "color-id-1",
"name": "Test color",
"hex": "#ff0000"
}
}
}
When piped to this app, the following schema is produced:
type Color {
id: String
name: String
hex: String,
}
type SubType {
id: String
name: String
color: Color,
}
type AutogeneratedMainType {
id: String
name: String
subType: SubType
color: Color
}
It kept the Color
type with more fields.
Consider this JSON with two types containing identical fields:
{
"id": "some-id-0",
"name": "A fun object",
"color": {
"id": "color-id-1",
"name": "Test color"
},
"favoriteColor": {
"id": "color-id-1",
"name": "Test color"
}
}
When piped to this app, the following schema is produced:
type FavoriteColor {
id: String
name: String
}
type Color {
id: String
name: String
}
type AutogeneratedMainType {
id: String
name: String
favoriteColor: FavoriteColor
color: Color
}
# Types with identical fields:
# FavoriteColor Color
It called out the two types with identical fields.
FAQs
Converts a JSON object into a GraphQL schema
The npm package @walmartlabs/json-to-simple-graphql-schema receives a total of 0 weekly downloads. As such, @walmartlabs/json-to-simple-graphql-schema popularity was classified as not popular.
We found that @walmartlabs/json-to-simple-graphql-schema demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 10 open source maintainers collaborating on the project.
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