| 1 | "use strict";
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| 2 | Object.defineProperty(exports, "__esModule", { value: true });
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| 3 | const crypto_1 = require("crypto");
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| 4 | const path_1 = require("path");
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| 5 | exports.sha256 = (preimage) => {
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| 6 | return crypto_1.createHash('sha256').update(preimage).digest();
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| 7 | };
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| 8 | function moduleExists(path) {
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| 9 | try {
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| 10 | require.resolve(path);
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| 11 | return true;
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| 12 | }
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| 13 | catch (err) {
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| 14 | return false;
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| 15 | }
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| 16 | }
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| 17 | exports.moduleExists = moduleExists;
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| 18 | exports.loadModuleFromPathOrDirectly = (searchPath, module) => {
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| 19 | const localPath = path_1.resolve(searchPath, module);
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| 20 | if (moduleExists(localPath)) {
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| 21 | return localPath;
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| 22 | }
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| 23 | else if (moduleExists(module)) {
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| 24 | return module;
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| 25 | }
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| 26 | else {
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| 27 | return null;
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| 28 | }
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| 29 | };
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| 30 | exports.loadModuleOfType = (type, name) => {
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| 31 | const module = exports.loadModuleFromPathOrDirectly(path_1.resolve(__dirname, `../${type}s/`), name);
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| 32 | if (!module) {
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| 33 | throw new Error(`${type} not found as a module name or under /${type}s/. moduleName=${name}`);
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| 34 | }
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| 35 | const loadedModule = require(module);
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| 36 | if (loadedModule && typeof loadedModule === 'object' && typeof loadedModule.default === 'function') {
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| 37 | return loadedModule.default;
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| 38 | }
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| 39 | else if (typeof loadedModule === 'function') {
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| 40 | return loadedModule;
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| 41 | }
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| 42 | else {
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| 43 | throw new TypeError(`${type} does not export a constructor. module=${module}`);
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| 44 | }
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| 45 | };
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| 46 | exports.extractDefaultsFromSchema = (schema, path = '') => {
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| 47 | if (typeof schema.default !== 'undefined') {
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| 48 | return schema.default;
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| 49 | }
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| 50 | switch (schema.type) {
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| 51 | case 'object':
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| 52 | const result = {};
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| 53 | for (let key of Object.keys(schema.properties)) {
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| 54 | result[key] = exports.extractDefaultsFromSchema(schema.properties[key], path + '.' + key);
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| 55 | }
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| 56 | return result;
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| 57 | default:
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| 58 | throw new Error('No default found for schema path: ' + path);
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| 59 | }
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| 60 | };
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| 61 | function composeMiddleware(middleware) {
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| 62 | return function (val, next) {
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| 63 | let index = -1;
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| 64 | return dispatch(0, val);
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| 65 | async function dispatch(i, val) {
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| 66 | if (i <= index) {
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| 67 | throw new Error('next() called multiple times.');
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| 68 | }
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| 69 | index = i;
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| 70 | const fn = (i === middleware.length) ? next : middleware[i];
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| 71 | return fn(val, function next(val) {
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| 72 | return dispatch(i + 1, val);
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| 73 | });
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| 74 | }
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| 75 | };
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| 76 | }
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| 77 | exports.composeMiddleware = composeMiddleware;
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| 78 | function uuid() {
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| 79 | const random = crypto_1.randomBytes(16);
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| 80 | random[6] = (random[6] & 0x0f) | 0x40;
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| 81 | random[8] = (random[8] & 0x3f) | 0x80;
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| 82 | return random.toString('hex')
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| 83 | .replace(/(.{8})(.{4})(.{4})(.{4})(.{12})/, '$1-$2-$3-$4-$5');
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| 84 | }
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| 85 | exports.uuid = uuid;
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| 86 | function hmac(secret, message) {
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| 87 | const hmac = crypto_1.createHmac('sha256', secret);
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| 88 | if (message instanceof Buffer) {
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| 89 | hmac.update(message);
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| 90 | }
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| 91 | else {
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| 92 | hmac.update(message, 'utf8');
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| 93 | }
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| 94 | return hmac.digest();
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| 95 | }
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| 96 | exports.hmac = hmac;
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| 97 | |
| \ | No newline at end of file |