feat: メニュー選択を数字入力からカーソル（上下キー）方式に変更
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nrslib
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src/__tests__/prompt.test.ts
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319
src/__tests__/prompt.test.ts
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@ -0,0 +1,319 @@
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/**
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* Tests for prompt module (cursor-based interactive menu)
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*/
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import { describe, it, expect, vi, beforeEach } from 'vitest';
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import chalk from 'chalk';
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import type { SelectOptionItem, KeyInputResult } from '../prompt/index.js';
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import { renderMenu, countRenderedLines, handleKeyInput } from '../prompt/index.js';
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// Disable chalk colors for predictable test output
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chalk.level = 0;
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describe('prompt', () => {
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describe('renderMenu', () => {
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const basicOptions: SelectOptionItem<string>[] = [
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{ label: 'Option A', value: 'a' },
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{ label: 'Option B', value: 'b' },
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{ label: 'Option C', value: 'c' },
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];
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it('should render all options with cursor on selected item', () => {
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const lines = renderMenu(basicOptions, 0, false);
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// 3 options = 3 lines
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expect(lines).toHaveLength(3);
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// First item selected - contains cursor marker
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expect(lines[0]).toContain('❯');
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expect(lines[0]).toContain('Option A');
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// Other items should not have cursor
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expect(lines[1]).not.toContain('❯');
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expect(lines[2]).not.toContain('❯');
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});
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it('should move cursor to second item when selectedIndex is 1', () => {
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const lines = renderMenu(basicOptions, 1, false);
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expect(lines[0]).not.toContain('❯');
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expect(lines[1]).toContain('❯');
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expect(lines[1]).toContain('Option B');
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expect(lines[2]).not.toContain('❯');
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});
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it('should move cursor to last item', () => {
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const lines = renderMenu(basicOptions, 2, false);
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expect(lines[0]).not.toContain('❯');
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expect(lines[1]).not.toContain('❯');
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expect(lines[2]).toContain('❯');
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expect(lines[2]).toContain('Option C');
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});
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it('should include Cancel option when hasCancelOption is true', () => {
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const lines = renderMenu(basicOptions, 0, true);
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// 3 options + 1 cancel = 4 lines
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expect(lines).toHaveLength(4);
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expect(lines[3]).toContain('Cancel');
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});
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it('should highlight Cancel when it is selected', () => {
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const lines = renderMenu(basicOptions, 3, true);
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// Cancel is at index 3 (options.length)
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expect(lines[3]).toContain('❯');
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expect(lines[3]).toContain('Cancel');
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// Other items should not have cursor
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expect(lines[0]).not.toContain('❯');
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expect(lines[1]).not.toContain('❯');
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expect(lines[2]).not.toContain('❯');
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});
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it('should render description lines', () => {
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const optionsWithDesc: SelectOptionItem<string>[] = [
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{ label: 'Option A', value: 'a', description: 'Description for A' },
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{ label: 'Option B', value: 'b' },
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];
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const lines = renderMenu(optionsWithDesc, 0, false);
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// Option A has label + description = 2 lines, Option B = 1 line
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expect(lines).toHaveLength(3);
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expect(lines[1]).toContain('Description for A');
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});
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it('should render detail lines', () => {
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const optionsWithDetails: SelectOptionItem<string>[] = [
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{
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label: 'Option A',
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value: 'a',
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description: 'Desc A',
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details: ['Detail 1', 'Detail 2'],
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},
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{ label: 'Option B', value: 'b' },
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];
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const lines = renderMenu(optionsWithDetails, 0, false);
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// Option A: label + description + 2 details = 4 lines, Option B = 1 line
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expect(lines).toHaveLength(5);
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expect(lines[2]).toContain('Detail 1');
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expect(lines[3]).toContain('Detail 2');
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});
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it('should handle empty options array', () => {
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const lines = renderMenu([], 0, false);
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expect(lines).toHaveLength(0);
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});
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it('should handle empty options with cancel', () => {
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const lines = renderMenu([], 0, true);
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expect(lines).toHaveLength(1);
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expect(lines[0]).toContain('Cancel');
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});
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});
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describe('countRenderedLines', () => {
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it('should count basic options (1 line each)', () => {
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const options: SelectOptionItem<string>[] = [
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{ label: 'A', value: 'a' },
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{ label: 'B', value: 'b' },
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{ label: 'C', value: 'c' },
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];
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expect(countRenderedLines(options, false)).toBe(3);
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});
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it('should add 1 for cancel option', () => {
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const options: SelectOptionItem<string>[] = [
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{ label: 'A', value: 'a' },
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{ label: 'B', value: 'b' },
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];
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expect(countRenderedLines(options, true)).toBe(3);
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});
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it('should count description lines', () => {
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const options: SelectOptionItem<string>[] = [
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{ label: 'A', value: 'a', description: 'Desc A' },
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{ label: 'B', value: 'b' },
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];
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// A: label + desc = 2, B: label = 1, total = 3
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expect(countRenderedLines(options, false)).toBe(3);
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});
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it('should count detail lines', () => {
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const options: SelectOptionItem<string>[] = [
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{
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label: 'A',
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value: 'a',
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description: 'Desc',
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details: ['D1', 'D2', 'D3'],
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},
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];
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// label + desc + 3 details = 5
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expect(countRenderedLines(options, false)).toBe(5);
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});
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it('should count combined description and details with cancel', () => {
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const options: SelectOptionItem<string>[] = [
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{
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label: 'A',
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value: 'a',
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description: 'Desc A',
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details: ['D1'],
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},
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{ label: 'B', value: 'b', description: 'Desc B' },
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];
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// A: 1 + 1 + 1 = 3, B: 1 + 1 = 2, cancel: 1, total = 6
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expect(countRenderedLines(options, true)).toBe(6);
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});
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it('should return 0 for empty options without cancel', () => {
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expect(countRenderedLines([], false)).toBe(0);
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});
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it('should return 1 for empty options with cancel', () => {
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expect(countRenderedLines([], true)).toBe(1);
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});
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});
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describe('handleKeyInput', () => {
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// 3 options + cancel = 4 total items
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const totalItems = 4;
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const optionCount = 3;
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const hasCancelOption = true;
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describe('move up (arrow up / k)', () => {
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it('should move up with arrow key', () => {
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const result = handleKeyInput('\x1B[A', 1, totalItems, hasCancelOption, optionCount);
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expect(result).toEqual({ action: 'move', newIndex: 0 });
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});
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it('should move up with vim k key', () => {
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const result = handleKeyInput('k', 2, totalItems, hasCancelOption, optionCount);
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expect(result).toEqual({ action: 'move', newIndex: 1 });
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});
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it('should wrap around from first item to last', () => {
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const result = handleKeyInput('\x1B[A', 0, totalItems, hasCancelOption, optionCount);
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expect(result).toEqual({ action: 'move', newIndex: 3 });
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});
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});
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describe('move down (arrow down / j)', () => {
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it('should move down with arrow key', () => {
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const result = handleKeyInput('\x1B[B', 0, totalItems, hasCancelOption, optionCount);
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expect(result).toEqual({ action: 'move', newIndex: 1 });
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});
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it('should move down with vim j key', () => {
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const result = handleKeyInput('j', 1, totalItems, hasCancelOption, optionCount);
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expect(result).toEqual({ action: 'move', newIndex: 2 });
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});
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it('should wrap around from last item to first', () => {
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const result = handleKeyInput('\x1B[B', 3, totalItems, hasCancelOption, optionCount);
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expect(result).toEqual({ action: 'move', newIndex: 0 });
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});
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});
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describe('confirm (Enter)', () => {
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it('should confirm with carriage return', () => {
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const result = handleKeyInput('\r', 2, totalItems, hasCancelOption, optionCount);
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expect(result).toEqual({ action: 'confirm', selectedIndex: 2 });
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});
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it('should confirm with newline', () => {
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const result = handleKeyInput('\n', 0, totalItems, hasCancelOption, optionCount);
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expect(result).toEqual({ action: 'confirm', selectedIndex: 0 });
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});
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it('should confirm cancel position when Enter on cancel item', () => {
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const result = handleKeyInput('\r', 3, totalItems, hasCancelOption, optionCount);
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expect(result).toEqual({ action: 'confirm', selectedIndex: 3 });
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});
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});
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describe('cancel (Escape)', () => {
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it('should return optionCount as cancelIndex when hasCancelOption', () => {
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const result = handleKeyInput('\x1B', 1, totalItems, true, optionCount);
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expect(result).toEqual({ action: 'cancel', cancelIndex: 3 });
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});
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it('should return -1 as cancelIndex when no cancel option', () => {
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const result = handleKeyInput('\x1B', 1, 3, false, optionCount);
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expect(result).toEqual({ action: 'cancel', cancelIndex: -1 });
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});
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});
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describe('exit (Ctrl+C)', () => {
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it('should return exit action', () => {
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const result = handleKeyInput('\x03', 0, totalItems, hasCancelOption, optionCount);
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expect(result).toEqual({ action: 'exit' });
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});
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});
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describe('unrecognized keys', () => {
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it('should return none for regular characters', () => {
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const result = handleKeyInput('a', 0, totalItems, hasCancelOption, optionCount);
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expect(result).toEqual({ action: 'none' });
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});
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it('should return none for space', () => {
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const result = handleKeyInput(' ', 0, totalItems, hasCancelOption, optionCount);
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expect(result).toEqual({ action: 'none' });
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});
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it('should return none for numbers', () => {
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const result = handleKeyInput('1', 0, totalItems, hasCancelOption, optionCount);
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expect(result).toEqual({ action: 'none' });
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});
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});
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describe('without cancel option', () => {
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const noCancelTotal = 3;
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it('should wrap up correctly without cancel', () => {
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const result = handleKeyInput('\x1B[A', 0, noCancelTotal, false, optionCount);
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expect(result).toEqual({ action: 'move', newIndex: 2 });
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});
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it('should wrap down correctly without cancel', () => {
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const result = handleKeyInput('\x1B[B', 2, noCancelTotal, false, optionCount);
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expect(result).toEqual({ action: 'move', newIndex: 0 });
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});
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});
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describe('single option', () => {
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it('should wrap around with 1 item + cancel (totalItems=2)', () => {
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const result = handleKeyInput('\x1B[B', 1, 2, true, 1);
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expect(result).toEqual({ action: 'move', newIndex: 0 });
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});
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it('should confirm single option', () => {
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const result = handleKeyInput('\r', 0, 1, false, 1);
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expect(result).toEqual({ action: 'confirm', selectedIndex: 0 });
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});
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});
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});
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describe('selectOption', () => {
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it('should return null for empty options', async () => {
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const { selectOption } = await import('../prompt/index.js');
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const result = await selectOption('Test:', []);
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expect(result).toBeNull();
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});
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});
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describe('selectOptionWithDefault', () => {
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it('should return default for empty options', async () => {
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const { selectOptionWithDefault } = await import('../prompt/index.js');
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const result = await selectOptionWithDefault('Test:', [], 'fallback');
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expect(result).toBe('fallback');
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});
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});
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});
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@ -1,68 +1,250 @@
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/**
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* Interactive prompts for CLI
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*
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* Provides simple input prompts for user interaction.
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* Provides cursor-based selection menus using arrow keys.
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* Users navigate with ↑/↓ keys and confirm with Enter.
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*/
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import * as readline from 'node:readline';
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import chalk from 'chalk';
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/** Option type for selectOption */
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export interface SelectOptionItem<T extends string> {
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label: string;
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value: T;
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description?: string;
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details?: string[];
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}
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/**
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* Prompt user to select from a list of options
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* Render the menu options to the terminal.
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* Writes directly to stdout using ANSI escape codes.
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* Exported for testing.
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*/
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export function renderMenu<T extends string>(
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options: SelectOptionItem<T>[],
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selectedIndex: number,
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hasCancelOption: boolean
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): string[] {
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const lines: string[] = [];
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for (let i = 0; i < options.length; i++) {
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const opt = options[i]!;
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const isSelected = i === selectedIndex;
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const cursor = isSelected ? chalk.cyan('❯') : ' ';
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const label = isSelected ? chalk.cyan.bold(opt.label) : opt.label;
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lines.push(` ${cursor} ${label}`);
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if (opt.description) {
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lines.push(chalk.gray(` ${opt.description}`));
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}
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if (opt.details && opt.details.length > 0) {
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for (const detail of opt.details) {
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lines.push(chalk.dim(` • ${detail}`));
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}
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}
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}
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if (hasCancelOption) {
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const isCancelSelected = selectedIndex === options.length;
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const cursor = isCancelSelected ? chalk.cyan('❯') : ' ';
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const label = isCancelSelected ? chalk.cyan.bold('Cancel') : chalk.gray('Cancel');
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lines.push(` ${cursor} ${label}`);
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}
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return lines;
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}
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/**
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* Count total rendered lines for a set of options.
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* Exported for testing.
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*/
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export function countRenderedLines<T extends string>(
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options: SelectOptionItem<T>[],
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hasCancelOption: boolean
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): number {
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let count = 0;
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for (const opt of options) {
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count++; // main label line
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if (opt.description) count++;
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if (opt.details) count += opt.details.length;
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}
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if (hasCancelOption) count++;
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return count;
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}
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/** Result of handling a key input */
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export type KeyInputResult =
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| { action: 'move'; newIndex: number }
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| { action: 'confirm'; selectedIndex: number }
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| { action: 'cancel'; cancelIndex: number }
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| { action: 'exit' }
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| { action: 'none' };
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/**
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* Pure function for key input state transitions.
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* Maps a key string to an action and new state.
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* Exported for testing.
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*/
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export function handleKeyInput(
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key: string,
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currentIndex: number,
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totalItems: number,
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hasCancelOption: boolean,
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optionCount: number
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): KeyInputResult {
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// Up arrow or vim 'k'
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if (key === '\x1B[A' || key === 'k') {
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return { action: 'move', newIndex: (currentIndex - 1 + totalItems) % totalItems };
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}
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// Down arrow or vim 'j'
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if (key === '\x1B[B' || key === 'j') {
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return { action: 'move', newIndex: (currentIndex + 1) % totalItems };
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}
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// Enter
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if (key === '\r' || key === '\n') {
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return { action: 'confirm', selectedIndex: currentIndex };
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}
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// Ctrl+C - exit process
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if (key === '\x03') {
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return { action: 'exit' };
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}
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// Escape - cancel
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if (key === '\x1B') {
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return { action: 'cancel', cancelIndex: hasCancelOption ? optionCount : -1 };
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}
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return { action: 'none' };
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}
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/**
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* Print the menu header (message + hint).
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*/
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function printHeader(message: string): void {
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console.log();
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console.log(chalk.cyan(message));
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console.log(chalk.gray(' (↑↓ to move, Enter to select)'));
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console.log();
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}
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/**
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* Set up raw mode on stdin and return cleanup function.
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*/
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function setupRawMode(): { cleanup: (listener: (data: Buffer) => void) => void; wasRaw: boolean } {
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const wasRaw = process.stdin.isRaw;
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process.stdin.setRawMode(true);
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process.stdin.resume();
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return {
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wasRaw,
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cleanup(listener: (data: Buffer) => void): void {
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process.stdin.removeListener('data', listener);
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process.stdin.setRawMode(wasRaw ?? false);
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process.stdin.pause();
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},
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};
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}
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/**
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* Redraw the menu by moving cursor up and re-rendering.
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*/
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function redrawMenu<T extends string>(
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options: SelectOptionItem<T>[],
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selectedIndex: number,
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hasCancelOption: boolean,
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totalLines: number
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): void {
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process.stdout.write(`\x1B[${totalLines}A`);
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process.stdout.write('\x1B[J');
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const newLines = renderMenu(options, selectedIndex, hasCancelOption);
|
||||
process.stdout.write(newLines.join('\n') + '\n');
|
||||
}
|
||||
|
||||
/**
|
||||
* Interactive cursor-based menu selection.
|
||||
* Uses raw mode to capture arrow key input for navigation.
|
||||
*/
|
||||
function interactiveSelect<T extends string>(
|
||||
message: string,
|
||||
options: SelectOptionItem<T>[],
|
||||
initialIndex: number,
|
||||
hasCancelOption: boolean
|
||||
): Promise<number> {
|
||||
return new Promise((resolve) => {
|
||||
const totalItems = hasCancelOption ? options.length + 1 : options.length;
|
||||
let selectedIndex = initialIndex;
|
||||
|
||||
printHeader(message);
|
||||
|
||||
const totalLines = countRenderedLines(options, hasCancelOption);
|
||||
const lines = renderMenu(options, selectedIndex, hasCancelOption);
|
||||
process.stdout.write(lines.join('\n') + '\n');
|
||||
|
||||
if (!process.stdin.isTTY) {
|
||||
resolve(initialIndex);
|
||||
return;
|
||||
}
|
||||
|
||||
const rawMode = setupRawMode();
|
||||
|
||||
const onKeypress = (data: Buffer): void => {
|
||||
const result = handleKeyInput(
|
||||
data.toString(),
|
||||
selectedIndex,
|
||||
totalItems,
|
||||
hasCancelOption,
|
||||
options.length
|
||||
);
|
||||
|
||||
switch (result.action) {
|
||||
case 'move':
|
||||
selectedIndex = result.newIndex;
|
||||
redrawMenu(options, selectedIndex, hasCancelOption, totalLines);
|
||||
break;
|
||||
case 'confirm':
|
||||
rawMode.cleanup(onKeypress);
|
||||
resolve(result.selectedIndex);
|
||||
break;
|
||||
case 'cancel':
|
||||
rawMode.cleanup(onKeypress);
|
||||
resolve(result.cancelIndex);
|
||||
break;
|
||||
case 'exit':
|
||||
rawMode.cleanup(onKeypress);
|
||||
process.exit(130);
|
||||
break;
|
||||
case 'none':
|
||||
break;
|
||||
}
|
||||
};
|
||||
|
||||
process.stdin.on('data', onKeypress);
|
||||
});
|
||||
}
|
||||
|
||||
/**
|
||||
* Prompt user to select from a list of options using cursor navigation.
|
||||
* @returns Selected option or null if cancelled
|
||||
*/
|
||||
export async function selectOption<T extends string>(
|
||||
message: string,
|
||||
options: { label: string; value: T; description?: string; details?: string[] }[]
|
||||
options: SelectOptionItem<T>[]
|
||||
): Promise<T | null> {
|
||||
const rl = readline.createInterface({
|
||||
input: process.stdin,
|
||||
output: process.stdout,
|
||||
});
|
||||
if (options.length === 0) return null;
|
||||
|
||||
console.log();
|
||||
console.log(chalk.cyan(message));
|
||||
console.log();
|
||||
const selectedIndex = await interactiveSelect(message, options, 0, true);
|
||||
|
||||
options.forEach((opt, idx) => {
|
||||
console.log(chalk.yellow(` ${idx + 1}. `) + opt.label);
|
||||
// Display description if provided
|
||||
if (opt.description) {
|
||||
console.log(chalk.gray(` ${opt.description}`));
|
||||
}
|
||||
// Display additional details if provided
|
||||
if (opt.details && opt.details.length > 0) {
|
||||
opt.details.forEach((detail) => {
|
||||
console.log(chalk.dim(` • ${detail}`));
|
||||
});
|
||||
}
|
||||
});
|
||||
console.log(chalk.gray(` 0. Cancel`));
|
||||
console.log();
|
||||
|
||||
return new Promise((resolve) => {
|
||||
rl.question(chalk.green('Select [0-' + options.length + ']: '), (answer) => {
|
||||
rl.close();
|
||||
|
||||
const num = parseInt(answer.trim(), 10);
|
||||
|
||||
if (isNaN(num) || num === 0) {
|
||||
resolve(null);
|
||||
return;
|
||||
// Cancel selected (last item or escape)
|
||||
if (selectedIndex === options.length || selectedIndex === -1) {
|
||||
return null;
|
||||
}
|
||||
|
||||
if (num >= 1 && num <= options.length) {
|
||||
const selected = options[num - 1];
|
||||
const selected = options[selectedIndex];
|
||||
if (selected) {
|
||||
resolve(selected.value);
|
||||
return;
|
||||
}
|
||||
console.log(chalk.green(` ✓ ${selected.label}`));
|
||||
return selected.value;
|
||||
}
|
||||
|
||||
console.log(chalk.red('Invalid selection'));
|
||||
resolve(null);
|
||||
});
|
||||
});
|
||||
return null;
|
||||
}
|
||||
|
||||
/**
|
||||
@ -91,8 +273,8 @@ export async function promptInput(message: string): Promise<string | null> {
|
||||
}
|
||||
|
||||
/**
|
||||
* Prompt user to select from a list of options with a default value
|
||||
* User can press Enter to select default, or enter a number to select specific option
|
||||
* Prompt user to select from a list of options with a default value.
|
||||
* Uses cursor navigation. Enter immediately selects the default.
|
||||
* @returns Selected option value
|
||||
*/
|
||||
export async function selectOptionWithDefault<T extends string>(
|
||||
@ -100,53 +282,33 @@ export async function selectOptionWithDefault<T extends string>(
|
||||
options: { label: string; value: T }[],
|
||||
defaultValue: T
|
||||
): Promise<T> {
|
||||
const rl = readline.createInterface({
|
||||
input: process.stdin,
|
||||
output: process.stdout,
|
||||
});
|
||||
|
||||
console.log();
|
||||
console.log(chalk.cyan(message));
|
||||
console.log();
|
||||
if (options.length === 0) return defaultValue;
|
||||
|
||||
// Find default index
|
||||
const defaultIndex = options.findIndex((opt) => opt.value === defaultValue);
|
||||
const initialIndex = defaultIndex >= 0 ? defaultIndex : 0;
|
||||
|
||||
options.forEach((opt, idx) => {
|
||||
const isDefault = opt.value === defaultValue;
|
||||
const marker = isDefault ? chalk.green(' (default)') : '';
|
||||
console.log(chalk.yellow(` ${idx + 1}. `) + opt.label + marker);
|
||||
});
|
||||
console.log();
|
||||
// Mark default in label
|
||||
const decoratedOptions: SelectOptionItem<T>[] = options.map((opt) => ({
|
||||
...opt,
|
||||
label: opt.value === defaultValue ? `${opt.label} ${chalk.green('(default)')}` : opt.label,
|
||||
}));
|
||||
|
||||
const hint = defaultIndex >= 0 ? ` [Enter=${defaultIndex + 1}]` : '';
|
||||
const selectedIndex = await interactiveSelect(message, decoratedOptions, initialIndex, false);
|
||||
|
||||
return new Promise((resolve) => {
|
||||
rl.question(chalk.green(`Select [1-${options.length}]${hint}: `), (answer) => {
|
||||
rl.close();
|
||||
|
||||
const trimmed = answer.trim();
|
||||
|
||||
// Empty input = use default
|
||||
if (!trimmed) {
|
||||
resolve(defaultValue);
|
||||
return;
|
||||
// Escape pressed - use default
|
||||
if (selectedIndex === -1) {
|
||||
console.log(chalk.gray(` Using default: ${defaultValue}`));
|
||||
return defaultValue;
|
||||
}
|
||||
|
||||
const num = parseInt(trimmed, 10);
|
||||
|
||||
if (num >= 1 && num <= options.length) {
|
||||
const selected = options[num - 1];
|
||||
const selected = options[selectedIndex];
|
||||
if (selected) {
|
||||
resolve(selected.value);
|
||||
return;
|
||||
}
|
||||
console.log(chalk.green(` ✓ ${selected.label}`));
|
||||
return selected.value;
|
||||
}
|
||||
|
||||
// Invalid input, use default
|
||||
console.log(chalk.gray(`Invalid selection, using default: ${defaultValue}`));
|
||||
resolve(defaultValue);
|
||||
});
|
||||
});
|
||||
return defaultValue;
|
||||
}
|
||||
|
||||
/**
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user