Fix.

node_modules/prompts/dist/elements/multiselect.js

@@ -0,0 +1,249 @@
+'use strict';
+
+const color = require('kleur');
+
+const _require = require('sisteransi'),
+      cursor = _require.cursor;
+
+const Prompt = require('./prompt');
+
+const _require2 = require('../util'),
+      clear = _require2.clear,
+      figures = _require2.figures,
+      style = _require2.style;
+/**
+ * MultiselectPrompt Base Element
+ * @param {Object} opts Options
+ * @param {String} opts.message Message
+ * @param {Array} opts.choices Array of choice objects
+ * @param {String} [opts.hint] Hint to display
+ * @param {String} [opts.warn] Hint shown for disabled choices
+ * @param {Number} [opts.max] Max choices
+ * @param {Number} [opts.cursor=0] Cursor start position
+ * @param {Stream} [opts.stdin] The Readable stream to listen to
+ * @param {Stream} [opts.stdout] The Writable stream to write readline data to
+ */
+
+
+class MultiselectPrompt extends Prompt {
+  constructor(opts = {}) {
+    super(opts);
+    this.msg = opts.message;
+    this.cursor = opts.cursor || 0;
+    this.scrollIndex = opts.cursor || 0;
+    this.hint = opts.hint || '';
+    this.warn = opts.warn || '- This option is disabled -';
+    this.minSelected = opts.min;
+    this.showMinError = false;
+    this.maxChoices = opts.max;
+    this.value = opts.choices.map((ch, idx) => {
+      if (typeof ch === 'string') ch = {
+        title: ch,
+        value: idx
+      };
+      return {
+        title: ch && (ch.title || ch.value || ch),
+        value: ch && (ch.value || idx),
+        selected: ch && ch.selected,
+        disabled: ch && ch.disabled
+      };
+    });
+    this.clear = clear('');
+
+    if (!opts.overrideRender) {
+      this.render();
+    }
+  }
+
+  reset() {
+    this.value.map(v => !v.selected);
+    this.cursor = 0;
+    this.fire();
+    this.render();
+  }
+
+  selected() {
+    return this.value.filter(v => v.selected);
+  }
+
+  abort() {
+    this.done = this.aborted = true;
+    this.fire();
+    this.render();
+    this.out.write('\n');
+    this.close();
+  }
+
+  submit() {
+    const selected = this.value.filter(e => e.selected);
+
+    if (this.minSelected && selected.length < this.minSelected) {
+      this.showMinError = true;
+      this.render();
+    } else {
+      this.done = true;
+      this.aborted = false;
+      this.fire();
+      this.render();
+      this.out.write('\n');
+      this.close();
+    }
+  }
+
+  first() {
+    this.cursor = 0;
+    this.render();
+  }
+
+  last() {
+    this.cursor = this.value.length - 1;
+    this.render();
+  }
+
+  next() {
+    this.cursor = (this.cursor + 1) % this.value.length;
+    this.render();
+  }
+
+  up() {
+    if (this.cursor === 0) {
+      this.cursor = this.value.length - 1;
+    } else {
+      this.cursor--;
+    }
+
+    this.render();
+  }
+
+  down() {
+    if (this.cursor === this.value.length - 1) {
+      this.cursor = 0;
+    } else {
+      this.cursor++;
+    }
+
+    this.render();
+  }
+
+  left() {
+    this.value[this.cursor].selected = false;
+    this.render();
+  }
+
+  right() {
+    if (this.value.filter(e => e.selected).length >= this.maxChoices) return this.bell();
+    this.value[this.cursor].selected = true;
+    this.render();
+  }
+
+  handleSpaceToggle() {
+    const v = this.value[this.cursor];
+
+    if (v.selected) {
+      v.selected = false;
+      this.render();
+    } else if (v.disabled || this.value.filter(e => e.selected).length >= this.maxChoices) {
+      return this.bell();
+    } else {
+      v.selected = true;
+      this.render();
+    }
+  }
+
+  _(c, key) {
+    if (c === ' ') {
+      this.handleSpaceToggle();
+    } else {
+      return this.bell();
+    }
+  }
+
+  renderInstructions() {
+    return `
+Instructions:
+    ${figures.arrowUp}/${figures.arrowDown}: Highlight option
+    ${figures.arrowLeft}/${figures.arrowRight}/[space]: Toggle selection
+    enter/return: Complete answer
+    `;
+  }
+
+  renderOption(cursor, v, i) {
+    let title;
+    if (v.disabled) title = cursor === i ? color.gray().underline(v.title) : color.strikethrough().gray(v.title);else title = cursor === i ? color.cyan().underline(v.title) : v.title;
+    return (v.selected ? color.green(figures.radioOn) : figures.radioOff) + '  ' + title;
+  } // shared with autocompleteMultiselect
+
+
+  paginateOptions(options) {
+    const c = this.cursor;
+    let styledOptions = options.map((v, i) => this.renderOption(c, v, i));
+    const numOfOptionsToRender = 10; // if needed, can add an option to change this.
+
+    let scopedOptions = styledOptions;
+    let hint = '';
+
+    if (styledOptions.length === 0) {
+      return color.red('No matches for this query.');
+    } else if (styledOptions.length > numOfOptionsToRender) {
+      let startIndex = c - numOfOptionsToRender / 2;
+      let endIndex = c + numOfOptionsToRender / 2;
+
+      if (startIndex < 0) {
+        startIndex = 0;
+        endIndex = numOfOptionsToRender;
+      } else if (endIndex > options.length) {
+        endIndex = options.length;
+        startIndex = endIndex - numOfOptionsToRender;
+      }
+
+      scopedOptions = styledOptions.slice(startIndex, endIndex);
+      hint = color.dim('(Move up and down to reveal more choices)');
+    }
+
+    return '\n' + scopedOptions.join('\n') + '\n' + hint;
+  } // shared with autocomleteMultiselect
+
+
+  renderOptions(options) {
+    if (!this.done) {
+      return this.paginateOptions(options);
+    }
+
+    return '';
+  }
+
+  renderDoneOrInstructions() {
+    if (this.done) {
+      const selected = this.value.filter(e => e.selected).map(v => v.title).join(', ');
+      return selected;
+    }
+
+    const output = [color.gray(this.hint), this.renderInstructions()];
+
+    if (this.value[this.cursor].disabled) {
+      output.push(color.yellow(this.warn));
+    }
+
+    return output.join(' ');
+  }
+
+  render() {
+    if (this.closed) return;
+    if (this.firstRender) this.out.write(cursor.hide);
+    super.render(); // print prompt
+
+    let prompt = [style.symbol(this.done, this.aborted), color.bold(this.msg), style.delimiter(false), this.renderDoneOrInstructions()].join(' ');
+
+    if (this.showMinError) {
+      prompt += color.red(`You must select a minimum of ${this.minSelected} choices.`);
+      this.showMinError = false;
+    }
+
+    prompt += this.renderOptions(this.value);
+    this.out.write(this.clear + prompt);
+    this.clear = clear(prompt);
+  }
+
+}
+
+module.exports = MultiselectPrompt;