@nestjs/graphql/dist/plugin/compiler-plugin.js

Nest - modern, fast, powerful node.js web framework (@graphql)

import { mergePluginOptions } from './merge-options.js';
import { isFilenameMatched } from './utils/is-filename-matched.util.js';
import { ModelClassVisitor } from './visitors/model-class.visitor.js';
const typeClassVisitor = new ModelClassVisitor();
export const before = (options, program) => {
    options = mergePluginOptions(options);
    return (ctx) => {
        return (sf) => {
            if (isFilenameMatched(options.typeFileNameSuffix, sf.fileName)) {
                return typeClassVisitor.visit(sf, ctx, program, options);
            }
            return sf;
        };
    };
};