digitransit-ui/docs/GraphQL.md

• If the data schema available from the OTP backend changes (for example if new query types are added), you need to regenerate the schema (schema.json and schema.graphql) by running cd build; node generate-schema.js

  If you need to fetch the schema from some non-default location, SCHEMA_SRC changes the URL or filepath for the schema file in graphls format and OTP_URL fetches json format schema from a running OTP instance:

  cd build; SCHEMA_SRC=where-schema-file-is-located OTP_URL=http://your-otp-host/routers/hsl/index/graphql node generate-schema.js

  When running otp in localhost, this usually translates to something like:

  cd build; SCHEMA_SRC=~/OpenTripPlanner/src/main/resources/org/opentripplanner/apis/gtfs/schema.graphqls OTP_URL=http://localhost:8080/otp/routers/hsl/index/graphql node generate-schema.js