@graphql-tools/json-file-loader
Version:
A set of utils for faster development of GraphQL tools
152 lines (151 loc) • 5.77 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.JsonFileLoader = void 0;
const tslib_1 = require("tslib");
const fs_1 = require("fs");
const path_1 = require("path");
const process_1 = require("process");
const globby_1 = tslib_1.__importDefault(require("globby"));
const unixify_1 = tslib_1.__importDefault(require("unixify"));
const utils_1 = require("@graphql-tools/utils");
const { readFile, access } = fs_1.promises;
const FILE_EXTENSIONS = ['.json'];
function createGlobbyOptions(options) {
return { absolute: true, ...options, ignore: [] };
}
const buildIgnoreGlob = (path) => `!${path}`;
/**
* This loader loads documents and type definitions from JSON files.
*
* The JSON file can be the result of an introspection query made against a schema:
*
* ```js
* const schema = await loadSchema('schema-introspection.json', {
* loaders: [
* new JsonFileLoader()
* ]
* });
* ```
*
* Or it can be a `DocumentNode` object representing a GraphQL document or type definitions:
*
* ```js
* const documents = await loadDocuments('queries/*.json', {
* loaders: [
* new GraphQLFileLoader()
* ]
* });
* ```
*/
class JsonFileLoader {
async canLoad(pointer, options) {
if ((0, utils_1.isValidPath)(pointer)) {
if (FILE_EXTENSIONS.find(extension => pointer.endsWith(extension))) {
const normalizedFilePath = (0, path_1.isAbsolute)(pointer)
? pointer
: (0, path_1.resolve)(options.cwd || (0, process_1.cwd)(), pointer);
try {
await access(normalizedFilePath);
return true;
}
catch {
return false;
}
}
}
return false;
}
canLoadSync(pointer, options) {
if ((0, utils_1.isValidPath)(pointer)) {
if (FILE_EXTENSIONS.find(extension => pointer.endsWith(extension))) {
const normalizedFilePath = (0, path_1.isAbsolute)(pointer)
? pointer
: (0, path_1.resolve)(options.cwd || (0, process_1.cwd)(), pointer);
return (0, fs_1.existsSync)(normalizedFilePath);
}
}
return false;
}
_buildGlobs(glob, options) {
const ignores = (0, utils_1.asArray)(options.ignore || []);
const globs = [(0, unixify_1.default)(glob), ...ignores.map(v => buildIgnoreGlob((0, unixify_1.default)(v)))];
return globs;
}
async resolveGlobs(glob, options) {
const globs = this._buildGlobs(glob, options);
const result = await (0, globby_1.default)(globs, createGlobbyOptions(options));
return result;
}
resolveGlobsSync(glob, options) {
const globs = this._buildGlobs(glob, options);
const result = globby_1.default.sync(globs, createGlobbyOptions(options));
return result;
}
async load(pointer, options) {
const resolvedPaths = await this.resolveGlobs(pointer, options);
const finalResult = [];
const errors = [];
await Promise.all(resolvedPaths.map(async (path) => {
if (await this.canLoad(path, options)) {
try {
const normalizedFilePath = (0, path_1.isAbsolute)(path)
? path
: (0, path_1.resolve)(options.cwd || (0, process_1.cwd)(), path);
const rawSDL = await readFile(normalizedFilePath, { encoding: 'utf8' });
finalResult.push(this.handleFileContent(normalizedFilePath, rawSDL, options));
}
catch (e) {
if (process_1.env['DEBUG']) {
console.error(e);
}
errors.push(e);
}
}
}));
if (errors.length > 0) {
if (errors.length === 1) {
throw errors[0];
}
throw new AggregateError(errors, `Reading from ${pointer} failed ; \n ` + errors.map((e) => e.message).join('\n'));
}
return finalResult;
}
loadSync(pointer, options) {
const resolvedPaths = this.resolveGlobsSync(pointer, options);
const finalResult = [];
const errors = [];
for (const path of resolvedPaths) {
if (this.canLoadSync(path, options)) {
try {
const normalizedFilePath = (0, path_1.isAbsolute)(path)
? path
: (0, path_1.resolve)(options.cwd || (0, process_1.cwd)(), path);
const rawSDL = (0, fs_1.readFileSync)(normalizedFilePath, { encoding: 'utf8' });
finalResult.push(this.handleFileContent(normalizedFilePath, rawSDL, options));
}
catch (e) {
if (process_1.env['DEBUG']) {
console.error(e);
}
errors.push(e);
}
}
}
if (errors.length > 0) {
if (errors.length === 1) {
throw errors[0];
}
throw new AggregateError(errors, `Reading from ${pointer} failed ; \n ` + errors.map((e) => e.message).join('\n'));
}
return finalResult;
}
handleFileContent(normalizedFilePath, rawSDL, options) {
try {
return (0, utils_1.parseGraphQLJSON)(normalizedFilePath, rawSDL, options);
}
catch (e) {
throw new Error(`Unable to read JSON file: ${normalizedFilePath}: ${e.message || /* istanbul ignore next */ e}`);
}
}
}
exports.JsonFileLoader = JsonFileLoader;