@graphql-mesh/fusion-composition/esm/transforms/prefix.js

Basic composition utility for Fusion spec

import { getRootTypeNames, MapperKind } from '@graphql-tools/utils';
import { createRenameFieldTransform, createRenameTypeTransform } from './rename.js';
export function createPrefixTransform({ value, ignore = [], includeRootOperations = false, includeTypes = true, } = {}) {
    return function prefixTransform(schema, subgraphConfig) {
        value = value || `${subgraphConfig.name}_`;
        const transforms = [];
        const rootTypes = getRootTypeNames(schema);
        if (includeRootOperations) {
            transforms.push(createRenameFieldTransform(({ typeName, fieldName }) => {
                if (ignore.includes(typeName) ||
                    ignore.includes(`${typeName}.${fieldName}`) ||
                    fieldName.startsWith('_encapsulated')) {
                    return fieldName;
                }
                return `${value}${fieldName}`;
            }, MapperKind.ROOT_FIELD));
        }
        if (includeTypes) {
            transforms.push(createRenameTypeTransform(({ typeName }) => {
                if (rootTypes.has(typeName) || ignore.includes(typeName)) {
                    return typeName;
                }
                return `${value}${typeName}`;
            }));
        }
        for (const transform of transforms) {
            schema = transform(schema, subgraphConfig);
        }
        return schema;
    };
}