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1"use strict";
2var __importDefault = (this && this.__importDefault) || function (mod) {
3 return (mod && mod.__esModule) ? mod : { "default": mod };
4};
5Object.defineProperty(exports, "__esModule", { value: true });
6const testcafe_hammerhead_1 = __importDefault(require("testcafe-hammerhead"));
7const asyncToGenerator_1 = __importDefault(require("babel-runtime/helpers/asyncToGenerator"));
8const lodash_1 = require("lodash");
9const load_babel_libs_1 = __importDefault(require("./load-babel-libs"));
10const runtime_1 = require("../errors/runtime");
11const types_1 = require("../errors/types");
12const ANONYMOUS_FN_RE = /^function\s*\*?\s*\(/;
13const ES6_OBJ_METHOD_NAME_RE = /^(\S+?)\s*\(/;
14const USE_STRICT_RE = /^('|")use strict('|");?/;
15const TRAILING_SEMICOLON_RE = /;\s*$/;
16const REGENERATOR_FOOTPRINTS_RE = /(_index\d+\.default|_regenerator\d+\.default|regeneratorRuntime)\.wrap\(function _callee\$\(_context\)/;
17const ASYNC_TO_GENERATOR_OUTPUT_CODE = asyncToGenerator_1.default(lodash_1.noop).toString();
18const babelArtifactPolyfills = {
19 'Promise': {
20 re: /_promise(\d+)\.default/,
21 getCode: match => `var _promise${match[1]} = { default: Promise };`,
22 removeMatchingCode: false
23 },
24 'Object.keys()': {
25 re: /_keys(\d+)\.default/,
26 getCode: match => `var _keys${match[1]} = { default: Object.keys };`,
27 removeMatchingCode: false
28 },
29 'JSON.stringify()': {
30 re: /_stringify(\d+)\.default/,
31 getCode: match => `var _stringify${match[1]} = { default: JSON.stringify };`,
32 removeMatchingCode: false
33 }
34};
35function getBabelOptions() {
36 const { presetFallback, transformForOfAsArray } = load_babel_libs_1.default();
37 return {
38 presets: [{ plugins: [transformForOfAsArray] }, presetFallback],
39 sourceMaps: false,
40 retainLines: true,
41 ast: false,
42 babelrc: false,
43 highlightCode: false
44 };
45}
46function downgradeES(fnCode) {
47 const { babel } = load_babel_libs_1.default();
48 const opts = getBabelOptions();
49 const compiled = babel.transform(fnCode, opts);
50 return compiled.code
51 .replace(USE_STRICT_RE, '')
52 .trim();
53}
54function addBabelArtifactsPolyfills(fnCode, dependenciesDefinition) {
55 let modifiedFnCode = fnCode;
56 const polyfills = Object
57 .values(babelArtifactPolyfills)
58 .reduce((polyfillsCode, polyfill) => {
59 const match = fnCode.match(polyfill.re);
60 if (match) {
61 if (polyfill.removeMatchingCode)
62 modifiedFnCode = modifiedFnCode.replace(polyfill.re, '');
63 return polyfillsCode + polyfill.getCode(match);
64 }
65 return polyfillsCode;
66 }, '');
67 return `(function(){${dependenciesDefinition}${polyfills} return ${modifiedFnCode}})();`;
68}
69function getDependenciesDefinition(dependencies) {
70 return Object
71 .keys(dependencies)
72 .reduce((code, name) => {
73 return code + `var ${name}=__dependencies$['${name}'];`;
74 }, '');
75}
76function makeFnCodeSuitableForParsing(fnCode) {
77 // NOTE: 'function() {}' -> '(function() {})'
78 if (ANONYMOUS_FN_RE.test(fnCode))
79 return `(${fnCode})`;
80 // NOTE: 'myFn () {}' -> 'function myFn() {}'
81 const match = fnCode.match(ES6_OBJ_METHOD_NAME_RE);
82 if (match && match[1] !== 'function')
83 return `function ${fnCode}`;
84 return fnCode;
85}
86function compileClientFunction(fnCode, dependencies, instantiationCallsiteName, compilationCallsiteName) {
87 if (fnCode === ASYNC_TO_GENERATOR_OUTPUT_CODE)
88 throw new runtime_1.ClientFunctionAPIError(compilationCallsiteName, instantiationCallsiteName, types_1.RUNTIME_ERRORS.regeneratorInClientFunctionCode);
89 fnCode = makeFnCodeSuitableForParsing(fnCode);
90 // NOTE: we need to recompile ES6 code for the browser if we are on newer versions of Node.
91 fnCode = downgradeES(fnCode);
92 fnCode = testcafe_hammerhead_1.default.processScript(fnCode, false);
93 // NOTE: check compiled code for regenerator injection: we have either generator
94 // recompiled in Node.js 4+ for client or async function declared in function code.
95 if (REGENERATOR_FOOTPRINTS_RE.test(fnCode))
96 throw new runtime_1.ClientFunctionAPIError(compilationCallsiteName, instantiationCallsiteName, types_1.RUNTIME_ERRORS.regeneratorInClientFunctionCode);
97 if (!TRAILING_SEMICOLON_RE.test(fnCode))
98 fnCode += ';';
99 const dependenciesDefinition = dependencies ? getDependenciesDefinition(dependencies) : '';
100 return addBabelArtifactsPolyfills(fnCode, dependenciesDefinition);
101}
102exports.default = compileClientFunction;
103module.exports = exports.default;
104//# 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hammerhead from 'testcafe-hammerhead';\nimport asyncToGenerator from 'babel-runtime/helpers/asyncToGenerator';\nimport { noop } from 'lodash';\nimport loadBabelLibs from './load-babel-libs';\nimport { ClientFunctionAPIError } from '../errors/runtime';\nimport { RUNTIME_ERRORS } from '../errors/types';\n\nconst ANONYMOUS_FN_RE                = /^function\\s*\\*?\\s*\\(/;\nconst ES6_OBJ_METHOD_NAME_RE         = /^(\\S+?)\\s*\\(/;\nconst USE_STRICT_RE                  = /^('|\")use strict('|\");?/;\nconst TRAILING_SEMICOLON_RE          = /;\\s*$/;\nconst REGENERATOR_FOOTPRINTS_RE      = /(_index\\d+\\.default|_regenerator\\d+\\.default|regeneratorRuntime)\\.wrap\\(function _callee\\$\\(_context\\)/;\nconst ASYNC_TO_GENERATOR_OUTPUT_CODE = asyncToGenerator(noop).toString();\n\nconst babelArtifactPolyfills = {\n    'Promise': {\n        re:                 /_promise(\\d+)\\.default/,\n        getCode:            match => `var _promise${match[1]} = { default: Promise };`,\n        removeMatchingCode: false\n    },\n\n    'Object.keys()': {\n        re:                 /_keys(\\d+)\\.default/,\n        getCode:            match => `var _keys${match[1]} = { default: Object.keys };`,\n        removeMatchingCode: false\n    },\n\n    'JSON.stringify()': {\n        re:                 /_stringify(\\d+)\\.default/,\n        getCode:            match => `var _stringify${match[1]} = { default: JSON.stringify };`,\n        removeMatchingCode: false\n    }\n};\n\n\nfunction getBabelOptions () {\n    const { presetFallback, transformForOfAsArray } = loadBabelLibs();\n\n    return {\n        presets:       [{ plugins: [transformForOfAsArray] }, presetFallback],\n        sourceMaps:    false,\n        retainLines:   true,\n        ast:           false,\n        babelrc:       false,\n        highlightCode: false\n    };\n}\n\nfunction downgradeES (fnCode) {\n    const { babel } = loadBabelLibs();\n\n    const opts     = getBabelOptions();\n    const compiled = babel.transform(fnCode, opts);\n\n    return compiled.code\n        .replace(USE_STRICT_RE, '')\n        .trim();\n}\n\nfunction addBabelArtifactsPolyfills (fnCode, dependenciesDefinition) {\n    let modifiedFnCode = fnCode;\n\n    const polyfills = Object\n        .values(babelArtifactPolyfills)\n        .reduce((polyfillsCode, polyfill) => {\n            const match = fnCode.match(polyfill.re);\n\n            if (match) {\n                if (polyfill.removeMatchingCode)\n                    modifiedFnCode = modifiedFnCode.replace(polyfill.re, '');\n\n                return polyfillsCode + polyfill.getCode(match);\n            }\n\n            return polyfillsCode;\n        }, '');\n\n    return `(function(){${dependenciesDefinition}${polyfills} return ${modifiedFnCode}})();`;\n}\n\nfunction getDependenciesDefinition (dependencies) {\n    return Object\n        .keys(dependencies)\n        .reduce((code, name) => {\n            return code + `var ${name}=__dependencies$['${name}'];`;\n        }, '');\n}\n\nfunction makeFnCodeSuitableForParsing (fnCode) {\n    // NOTE: 'function() {}' -> '(function() {})'\n    if (ANONYMOUS_FN_RE.test(fnCode))\n        return `(${fnCode})`;\n\n    // NOTE: 'myFn () {}' -> 'function myFn() {}'\n    const match = fnCode.match(ES6_OBJ_METHOD_NAME_RE);\n\n    if (match && match[1] !== 'function')\n        return `function ${fnCode}`;\n\n    return fnCode;\n}\n\nexport default function compileClientFunction (fnCode, dependencies, instantiationCallsiteName, compilationCallsiteName) {\n    if (fnCode === ASYNC_TO_GENERATOR_OUTPUT_CODE)\n        throw new ClientFunctionAPIError(compilationCallsiteName, instantiationCallsiteName, RUNTIME_ERRORS.regeneratorInClientFunctionCode);\n\n    fnCode = makeFnCodeSuitableForParsing(fnCode);\n\n    // NOTE: we need to recompile ES6 code for the browser if we are on newer versions of Node.\n    fnCode = downgradeES(fnCode);\n    fnCode = hammerhead.processScript(fnCode, false);\n\n    // NOTE: check compiled code for regenerator injection: we have either generator\n    // recompiled in Node.js 4+ for client or async function declared in function code.\n    if (REGENERATOR_FOOTPRINTS_RE.test(fnCode))\n        throw new ClientFunctionAPIError(compilationCallsiteName, instantiationCallsiteName, RUNTIME_ERRORS.regeneratorInClientFunctionCode);\n\n    if (!TRAILING_SEMICOLON_RE.test(fnCode))\n        fnCode += ';';\n\n    const dependenciesDefinition = dependencies ? getDependenciesDefinition(dependencies) : '';\n\n    return addBabelArtifactsPolyfills(fnCode, dependenciesDefinition);\n}\n"]}
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