From b3f42e62af698a67c2250533c437569559f1fdf9 Mon Sep 17 00:00:00 2001 From: syuilo Date: Thu, 29 Dec 2016 07:49:51 +0900 Subject: Initial commit :four_leaf_clover: --- src/utils/cli/indicator.ts | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 src/utils/cli/indicator.ts (limited to 'src/utils/cli/indicator.ts') diff --git a/src/utils/cli/indicator.ts b/src/utils/cli/indicator.ts new file mode 100644 index 0000000000..3e23f9b274 --- /dev/null +++ b/src/utils/cli/indicator.ts @@ -0,0 +1,35 @@ +import * as readline from 'readline'; + +/** + * Indicator + */ +export default class { + private clock: NodeJS.Timer; + + constructor(text: string) { + let i = 0; // Dots counter + + draw(); + this.clock = setInterval(draw, 300); + + function draw(): void { + cll(); + i = (i + 1) % 4; + const dots = new Array(i + 1).join('.'); + process.stdout.write(text + dots); // Write text + } + } + + public end(): void { + clearInterval(this.clock); + cll(); + } +} + +/** + * Clear current line + */ +function cll(): void { + readline.clearLine(process.stdout, 0); // Clear current text + readline.cursorTo(process.stdout, 0, null); // Move cursor to the head of line +} -- cgit v1.2.3-freya