1 | 'use strict';
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2 | const ansiEscapes = require('ansi-escapes');
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3 |
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4 | /**
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5 | * Move cursor left by `x`
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6 | * @param {Readline} rl - Readline instance
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7 | * @param {Number} x - How far to go left (default to 1)
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8 | */
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9 |
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10 | exports.left = function (rl, x) {
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11 | rl.output.write(ansiEscapes.cursorBackward(x));
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12 | };
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13 |
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14 | /**
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15 | * Move cursor right by `x`
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16 | * @param {Readline} rl - Readline instance
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17 | * @param {Number} x - How far to go left (default to 1)
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18 | */
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19 |
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20 | exports.right = function (rl, x) {
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21 | rl.output.write(ansiEscapes.cursorForward(x));
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22 | };
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23 |
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24 | /**
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25 | * Move cursor up by `x`
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26 | * @param {Readline} rl - Readline instance
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27 | * @param {Number} x - How far to go up (default to 1)
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28 | */
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29 |
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30 | exports.up = function (rl, x) {
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31 | rl.output.write(ansiEscapes.cursorUp(x));
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32 | };
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33 |
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34 | /**
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35 | * Move cursor down by `x`
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36 | * @param {Readline} rl - Readline instance
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37 | * @param {Number} x - How far to go down (default to 1)
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38 | */
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39 |
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40 | exports.down = function (rl, x) {
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41 | rl.output.write(ansiEscapes.cursorDown(x));
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42 | };
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43 |
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44 | /**
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45 | * Clear current line
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46 | * @param {Readline} rl - Readline instance
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47 | * @param {Number} len - number of line to delete
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48 | */
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49 | exports.clearLine = function (rl, len) {
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50 | rl.output.write(ansiEscapes.eraseLines(len));
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51 | };
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