@graphql-mesh/serve-runtime/esm/plugins/useChangingSchema.js

import { mapMaybePromise } from '@graphql-mesh/utils';
export function useChangingSchema(getSchema, setSchemaCallback) {
    let currentSchema;
    let setSchema;
    return {
        onPluginInit(payload) {
            setSchema = function (schema) {
                if (currentSchema !== schema) {
                    currentSchema = schema;
                    payload.setSchema(schema);
                }
            };
            setSchemaCallback(setSchema);
        },
        // @ts-expect-error - Typing issue with onRequestParse
        onRequestParse() {
            return {
                onRequestParseDone() {
                    return mapMaybePromise(getSchema(), setSchema);
                },
            };
        },
    };
}