Initial pass

node_modules/sisteransi/src/index.js

@@ -0,0 +1,56 @@
+'use strict';
+
+const ESC = '\u001B[';
+const clear = '\u0007';
+const beep = '\u0007';
+
+const cursor = {
+  to(x, y) {
+    if (!y) return `${ESC}${x + 1}G`;
+    return `${ESC}${y + 1};${x + 1}H`;
+  },
+  move(x, y) {
+    let ret = '';
+
+    if (x < 0) ret += `${ESC}${-x}D`;
+    else if (x > 0) ret += `${ESC}${x}C`;
+
+    if (y < 0) ret += `${ESC}${-y}A`;
+    else if (y > 0) ret += `${ESC}${y}B`;
+
+    return ret;
+  },
+  up: (count = 1) => `${ESC}${count}A`,
+  down: (count = 1) => `${ESC}${count}B`,
+  forward: (count = 1) => `${ESC}${count}C`,
+  backward: (count = 1) => `${ESC}${count}D`,
+  nextLine: (count = 1) => `${ESC}E`.repeat(count),
+  prevLine: (count = 1) => `${ESC}F`.repeat(count),
+  left: `${ESC}G`,
+  hide: `${ESC}?25l`,
+  show: `${ESC}?25h`
+}
+
+const scroll = {
+  up: (count = 1) => `${ESC}S`.repeat(count),
+  down: (count = 1) => `${ESC}T`.repeat(count)
+}
+
+const erase = {
+  screen: `${ESC}2J`,
+  up: (count = 1) => `${ESC}1J`.repeat(count),
+  down: (count = 1) => `${ESC}J`.repeat(count),
+  line: `${ESC}2K`,
+  lineEnd: `${ESC}K`,
+  lineStart: `${ESC}1K`,
+  lines(count) {
+    let clear = '';
+    for (let i = 0; i < count; i++)
+      clear += this.line + (i < count - 1 ? cursor.up() : '');
+    if (count)
+      clear += cursor.left;
+    return clear;
+  }
+}
+
+module.exports = { cursor, scroll, erase, beep, clear };