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qwen/nodejs/node_modules/prompts/lib/elements/confirm.js

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+const color = require('kleur');
+const Prompt = require('./prompt');
+const { style, clear } = require('../util');
+const { erase, cursor } = require('sisteransi');
+
+/**
+ * ConfirmPrompt Base Element
+ * @param {Object} opts Options
+ * @param {String} opts.message Message
+ * @param {Boolean} [opts.initial] Default value (true/false)
+ * @param {Stream} [opts.stdin] The Readable stream to listen to
+ * @param {Stream} [opts.stdout] The Writable stream to write readline data to
+ * @param {String} [opts.yes] The "Yes" label
+ * @param {String} [opts.yesOption] The "Yes" option when choosing between yes/no
+ * @param {String} [opts.no] The "No" label
+ * @param {String} [opts.noOption] The "No" option when choosing between yes/no
+ */
+class ConfirmPrompt extends Prompt {
+  constructor(opts={}) {
+    super(opts);
+    this.msg = opts.message;
+    this.value = opts.initial;
+    this.initialValue = !!opts.initial;
+    this.yesMsg = opts.yes || 'yes';
+    this.yesOption = opts.yesOption || '(Y/n)';
+    this.noMsg = opts.no || 'no';
+    this.noOption = opts.noOption || '(y/N)';
+    this.render();
+  }
+
+  reset() {
+    this.value = this.initialValue;
+    this.fire();
+    this.render();
+  }
+
+  exit() {
+    this.abort();
+  }
+
+  abort() {
+    this.done = this.aborted = true;
+    this.fire();
+    this.render();
+    this.out.write('\n');
+    this.close();
+  }
+
+  submit() {
+    this.value = this.value || false;
+    this.done = true;
+    this.aborted = false;
+    this.fire();
+    this.render();
+    this.out.write('\n');
+    this.close();
+  }
+
+  _(c, key) {
+    if (c.toLowerCase() === 'y') {
+      this.value = true;
+      return this.submit();
+    }
+    if (c.toLowerCase() === 'n') {
+      this.value = false;
+      return this.submit();
+    }
+    return this.bell();
+  }
+
+  render() {
+    if (this.closed) return;
+    if (this.firstRender) this.out.write(cursor.hide);
+    else this.out.write(clear(this.outputText, this.out.columns));
+    super.render();
+
+    this.outputText = [
+      style.symbol(this.done, this.aborted),
+      color.bold(this.msg),
+      style.delimiter(this.done),
+      this.done ? (this.value ? this.yesMsg : this.noMsg)
+          : color.gray(this.initialValue ? this.yesOption : this.noOption)
+    ].join(' ');
+
+    this.out.write(erase.line + cursor.to(0) + this.outputText);
+  }
+}
+
+module.exports = ConfirmPrompt;