react-py
Version:
Effortlessly run Python code in your React apps
263 lines (262 loc) • 13.8 kB
JavaScript
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
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 = Object.create((typeof Iterator === "function" ? Iterator : Object).prototype);
return g.next = verb(0), g["throw"] = verb(1), g["return"] = verb(2), typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (g && (g = 0, op[0] && (_ = 0)), _) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
var __values = (this && this.__values) || function(o) {
var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0;
if (m) return m.call(o);
if (o && typeof o.length === "number") return {
next: function () {
if (o && i >= o.length) o = void 0;
return { value: o && o[i++], done: !o };
}
};
throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
};
var __read = (this && this.__read) || function (o, n) {
var m = typeof Symbol === "function" && o[Symbol.iterator];
if (!m) return o;
var i = m.call(o), r, ar = [], e;
try {
while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
}
catch (error) { e = { error: error }; }
finally {
try {
if (r && !r.done && (m = i["return"])) m.call(i);
}
finally { if (e) throw e.error; }
}
return ar;
};
importScripts('https://cdn.jsdelivr.net/pyodide/v0.26.2/full/pyodide.js');
import { expose } from 'comlink';
// Monkey patch console.log to prevent the script from outputting logs
if (self.location.hostname !== 'localhost') {
// eslint-disable-next-line @typescript-eslint/no-empty-function
console.log = function () { };
// eslint-disable-next-line @typescript-eslint/no-empty-function
console.error = function () { };
}
var pythonConsole;
var reactPyModule = {
getInput: function (id, prompt) {
var request = new XMLHttpRequest();
// Synchronous request to be intercepted by service worker
request.open('GET', "/react-py-get-input/?id=".concat(id, "&prompt=").concat(encodeURIComponent(prompt)), false);
request.send(null);
return request.responseText;
}
};
var patchInputCode = function (id) { return "\nimport sys, builtins\nimport react_py\n__prompt_str__ = \"\"\ndef get_input(prompt=\"\"):\n global __prompt_str__\n __prompt_str__ = prompt\n print(prompt, end=\"\")\n s = react_py.getInput(\"".concat(id, "\", prompt)\n print()\n return s\nbuiltins.input = get_input\nsys.stdin.readline = lambda: react_py.getInput(\"").concat(id, "\", __prompt_str__)\n"); };
var python = {
init: function (stdout, onLoad, mode, packages) {
return __awaiter(this, void 0, void 0, function () {
var _a, micropip, id, version, initCode, namespace, initConsoleCode, reprShorten, banner, awaitFut, pyconsole, clearConsole;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
_a = self;
return [4 /*yield*/, self.loadPyodide({ stdout: stdout })
// Enable debug mode
// self.pyodide.setDebug(true)
// Always load pyodide-http package
];
case 1:
_a.pyodide = _b.sent();
// Enable debug mode
// self.pyodide.setDebug(true)
// Always load pyodide-http package
return [4 /*yield*/, self.pyodide.loadPackage(['pyodide-http'])
// Load packages if provided
];
case 2:
// Enable debug mode
// self.pyodide.setDebug(true)
// Always load pyodide-http package
_b.sent();
if (!(packages && packages[0].length > 0)) return [3 /*break*/, 4];
return [4 /*yield*/, self.pyodide.loadPackage(packages[0])];
case 3:
_b.sent();
_b.label = 4;
case 4:
if (!(packages && packages[1].length > 0)) return [3 /*break*/, 7];
return [4 /*yield*/, self.pyodide.loadPackage(['micropip'])];
case 5:
_b.sent();
micropip = self.pyodide.pyimport('micropip');
return [4 /*yield*/, micropip.install(packages[1])];
case 6:
_b.sent();
_b.label = 7;
case 7:
id = self.crypto.randomUUID();
version = self.pyodide.version;
self.pyodide.registerJsModule('react_py', reactPyModule);
initCode = "\nimport sys\nimport pyodide_http\n\nsys.tracebacklimit = 0\n\npyodide_http.patch_all()\n";
return [4 /*yield*/, self.pyodide.runPythonAsync(initCode)];
case 8:
_b.sent();
if (!(mode === 'console')) return [3 /*break*/, 11];
namespace = self.pyodide.globals.get('dict')();
initConsoleCode = "\nimport sys\nfrom pyodide.ffi import to_js\nfrom pyodide.console import PyodideConsole, repr_shorten, BANNER\nimport __main__\nBANNER = \"Welcome to the Pyodide terminal emulator \uD83D\uDC0D\\n\" + BANNER\npyconsole = PyodideConsole(__main__.__dict__)\nimport builtins\nasync def await_fut(fut):\n res = await fut\n if res is not None:\n builtins._ = res\n return to_js([res], depth=1)\ndef clear_console():\n pyconsole.buffer = []\n";
return [4 /*yield*/, self.pyodide.runPythonAsync(initConsoleCode, { globals: namespace })];
case 9:
_b.sent();
reprShorten = namespace.get('repr_shorten');
banner = namespace.get('BANNER');
awaitFut = namespace.get('await_fut');
pyconsole = namespace.get('pyconsole');
clearConsole = namespace.get('clear_console');
// eslint-disable-next-line camelcase
pyconsole.stdout_callback = stdout;
pythonConsole = {
reprShorten: reprShorten,
awaitFut: awaitFut,
pyconsole: pyconsole,
clearConsole: clearConsole
};
return [4 /*yield*/, self.pyodide.runPythonAsync(patchInputCode(id), {
globals: namespace
})];
case 10:
_b.sent();
onLoad({ id: id, version: version, banner: banner });
return [3 /*break*/, 13];
case 11: return [4 /*yield*/, self.pyodide.runPythonAsync(patchInputCode(id))];
case 12:
_b.sent();
onLoad({ id: id, version: version });
_b.label = 13;
case 13: return [2 /*return*/];
}
});
});
},
run: function (code, autoImportPackages) {
return __awaiter(this, void 0, void 0, function () {
var state, _a, _b, line, fut, wrapped, _c, value, error_1, message, e_1_1;
var e_1, _d;
return __generator(this, function (_e) {
switch (_e.label) {
case 0:
if (!autoImportPackages) return [3 /*break*/, 2];
return [4 /*yield*/, self.pyodide.loadPackagesFromImports(code)];
case 1:
_e.sent();
_e.label = 2;
case 2:
if (!pythonConsole) return [3 /*break*/, 14];
if (!pythonConsole) {
throw new Error('Console has not been initialised');
}
if (code === undefined) {
throw new Error('No code to push');
}
state = void 0;
_e.label = 3;
case 3:
_e.trys.push([3, 11, 12, 13]);
_a = __values(code.split('\n')), _b = _a.next();
_e.label = 4;
case 4:
if (!!_b.done) return [3 /*break*/, 10];
line = _b.value;
fut = pythonConsole.pyconsole.push(line);
state = fut.syntax_check;
wrapped = pythonConsole.awaitFut(fut);
_e.label = 5;
case 5:
_e.trys.push([5, 7, 8, 9]);
return [4 /*yield*/, wrapped];
case 6:
_c = __read.apply(void 0, [_e.sent(), 1]), value = _c[0];
if (value instanceof self.pyodide.ffi.PyProxy) {
value.destroy();
}
return [3 /*break*/, 9];
case 7:
error_1 = _e.sent();
if (error_1.constructor.name === 'PythonError') {
message = fut.formatted_error || error_1.message;
return [2 /*return*/, { state: state, error: message.trimEnd() }];
}
else {
throw error_1;
}
return [3 /*break*/, 9];
case 8:
fut.destroy();
wrapped.destroy();
return [7 /*endfinally*/];
case 9:
_b = _a.next();
return [3 /*break*/, 4];
case 10: return [3 /*break*/, 13];
case 11:
e_1_1 = _e.sent();
e_1 = { error: e_1_1 };
return [3 /*break*/, 13];
case 12:
try {
if (_b && !_b.done && (_d = _a.return)) _d.call(_a);
}
finally { if (e_1) throw e_1.error; }
return [7 /*endfinally*/];
case 13: return [2 /*return*/, { state: state }];
case 14: return [4 /*yield*/, self.pyodide.runPythonAsync(code)];
case 15:
_e.sent();
_e.label = 16;
case 16: return [2 /*return*/];
}
});
});
},
readFile: function (name) {
return self.pyodide.FS.readFile(name, { encoding: 'utf8' });
},
writeFile: function (name, data) {
return self.pyodide.FS.writeFile(name, data, { encoding: 'utf8' });
},
mkdir: function (name) {
self.pyodide.FS.mkdir(name);
},
rmdir: function (name) {
self.pyodide.FS.rmdir(name);
}
};
expose(python);