cli-legend
Version:
"A fun command-line rogurelike dungeon game"
150 lines (149 loc) • 7.21 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
return ar;
};
return ownKeys(o);
};
return function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
__setModuleDefault(result, mod);
return result;
};
})();
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.createPrompt = createPrompt;
const readline = __importStar(require("node:readline"));
const node_async_hooks_1 = require("node:async_hooks");
const mute_stream_1 = __importDefault(require("mute-stream"));
const signal_exit_1 = require("signal-exit");
const screen_manager_js_1 = __importDefault(require("./screen-manager.js"));
const promise_polyfill_js_1 = require("./promise-polyfill.js");
const hook_engine_js_1 = require("./hook-engine.js");
const errors_js_1 = require("./errors.js");
function getCallSites() {
const _prepareStackTrace = Error.prepareStackTrace;
let result = [];
try {
Error.prepareStackTrace = (_, callSites) => {
const callSitesWithoutCurrent = callSites.slice(1);
result = callSitesWithoutCurrent;
return callSitesWithoutCurrent;
};
// eslint-disable-next-line @typescript-eslint/no-unused-expressions, unicorn/error-message
new Error().stack;
}
catch {
// An error will occur if the Node flag --frozen-intrinsics is used.
// https://nodejs.org/api/cli.html#--frozen-intrinsics
return result;
}
Error.prepareStackTrace = _prepareStackTrace;
return result;
}
function createPrompt(view) {
const callSites = getCallSites();
const prompt = (config, context = {}) => {
// Default `input` to stdin
const { input = process.stdin, signal } = context;
const cleanups = new Set();
// Add mute capabilities to the output
const output = new mute_stream_1.default();
output.pipe(context.output ?? process.stdout);
const rl = readline.createInterface({
terminal: true,
input,
output,
});
const screen = new screen_manager_js_1.default(rl);
const { promise, resolve, reject } = promise_polyfill_js_1.PromisePolyfill.withResolver();
const cancel = () => reject(new errors_js_1.CancelPromptError());
if (signal) {
const abort = () => reject(new errors_js_1.AbortPromptError({ cause: signal.reason }));
if (signal.aborted) {
abort();
return Object.assign(promise, { cancel });
}
signal.addEventListener('abort', abort);
cleanups.add(() => signal.removeEventListener('abort', abort));
}
cleanups.add((0, signal_exit_1.onExit)((code, signal) => {
reject(new errors_js_1.ExitPromptError(`User force closed the prompt with ${code} ${signal}`));
}));
// Re-renders only happen when the state change; but the readline cursor could change position
// and that also requires a re-render (and a manual one because we mute the streams).
// We set the listener after the initial workLoop to avoid a double render if render triggered
// by a state change sets the cursor to the right position.
const checkCursorPos = () => screen.checkCursorPos();
rl.input.on('keypress', checkCursorPos);
cleanups.add(() => rl.input.removeListener('keypress', checkCursorPos));
return (0, hook_engine_js_1.withHooks)(rl, (cycle) => {
// The close event triggers immediately when the user press ctrl+c. SignalExit on the other hand
// triggers after the process is done (which happens after timeouts are done triggering.)
// We triggers the hooks cleanup phase on rl `close` so active timeouts can be cleared.
const hooksCleanup = node_async_hooks_1.AsyncResource.bind(() => hook_engine_js_1.effectScheduler.clearAll());
rl.on('close', hooksCleanup);
cleanups.add(() => rl.removeListener('close', hooksCleanup));
cycle(() => {
try {
const nextView = view(config, (value) => {
setImmediate(() => resolve(value));
});
// Typescript won't allow this, but not all users rely on typescript.
// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
if (nextView === undefined) {
const callerFilename = callSites[1]?.getFileName?.();
throw new Error(`Prompt functions must return a string.\n at ${callerFilename}`);
}
const [content, bottomContent] = typeof nextView === 'string' ? [nextView] : nextView;
screen.render(content, bottomContent);
hook_engine_js_1.effectScheduler.run();
}
catch (error) {
reject(error);
}
});
return Object.assign(promise
.then((answer) => {
hook_engine_js_1.effectScheduler.clearAll();
return answer;
}, (error) => {
hook_engine_js_1.effectScheduler.clearAll();
throw error;
})
// Wait for the promise to settle, then cleanup.
.finally(() => {
cleanups.forEach((cleanup) => cleanup());
screen.done({ clearContent: Boolean(context.clearPromptOnDone) });
output.end();
})
// Once cleanup is done, let the expose promise resolve/reject to the internal one.
.then(() => promise), { cancel });
});
};
return prompt;
}