graphql-code-generator/dist/loaders/schema/introspection-from-file.js

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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};
var __generator = (this && this.__generator) || function (thisArg, body) {
    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
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};
Object.defineProperty(exports, "__esModule", { value: true });
var graphql_codegen_core_1 = require("graphql-codegen-core");
var fs_1 = require("fs");
var isValidPath = require("is-valid-path");
var path_1 = require("path");
var spinner_1 = require("../../spinner");
var errors_1 = require("../../errors");
var IntrospectionFromFileLoader = /** @class */ (function () {
    function IntrospectionFromFileLoader() {
    }
    IntrospectionFromFileLoader.prototype.stripBOM = function (content) {
        content = content.toString();
        // Remove byte order marker. This catches EF BB BF (the UTF-8 BOM)
        // because the buffer-to-string conversion in `fs.readFileSync()`
        // translates it to FEFF, the UTF-16 BOM.
        if (content.charCodeAt(0) === 0xfeff) {
            content = content.slice(1);
        }
        return content;
    };
    IntrospectionFromFileLoader.prototype.parseBOM = function (content) {
        return JSON.parse(this.stripBOM(content));
    };
    IntrospectionFromFileLoader.prototype.canHandle = function (pointerToSchema) {
        return isValidPath(pointerToSchema) && fs_1.existsSync(pointerToSchema) && path_1.extname(pointerToSchema) === '.json';
    };
    IntrospectionFromFileLoader.prototype.handle = function (pointerToSchema, _cliOptions) {
        return __awaiter(this, void 0, void 0, function () {
            var fullPath, fileContent, introspection;
            return __generator(this, function (_a) {
                spinner_1.default.info("Loading GraphQL Introspection from file: " + pointerToSchema + "...");
                fullPath = path_1.isAbsolute(pointerToSchema) ? pointerToSchema : path_1.resolve(process.cwd(), pointerToSchema);
                if (fs_1.existsSync(fullPath)) {
                    fileContent = fs_1.readFileSync(fullPath, 'utf8');
                    if (!fileContent) {
                        throw new errors_1.DetailedError("Unable to read local introspection file: " + fullPath);
                    }
                    introspection = this.parseBOM(fileContent);
                    if (introspection.data) {
                        introspection = introspection.data;
                    }
                    graphql_codegen_core_1.validateIntrospection(introspection);
                    return [2 /*return*/, graphql_codegen_core_1.introspectionToGraphQLSchema(introspection)];
                }
                throw new errors_1.DetailedError("Unable to locate local introspection file: " + fullPath);
            });
        });
    };
    return IntrospectionFromFileLoader;
}());
exports.IntrospectionFromFileLoader = IntrospectionFromFileLoader;
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