buffer-render

$ npm install buffer-render
Write and modify content on the terminal, efficiently, without re-rendering everything
NOTE: Dynamic resize on change of terminal size is NOT supported.

API

Terminal class

const Terminal = require("buffer-render");

• Terminal() aka constructor
  No parameters.
• .render()
  No parameters. Renders the current buffer to the screen. This is probably the method you will need the most.
• .size
  An Object containing the size of the terminal: {x: <number>, y: <number>}
• .buffer
  A 2D array which represents the terminal, starting from top left. This buffer is supposed to be modified if you want to change anything on the terminal, and the changes will be rendered when calling .render(). Indexed [y][x] and starts on the top left of the terminal.
• .draw An instance of the Draw class. See below for usage.

Draw class

terminal.draw

• .box(startY, startX, endY, endX, boxChar)
  • startY : top left corner
  • startX : top right corner
  • endY : bottom left corner
  • endX : bottom right corner
  • boxChar : the characters to use for drawing, in an object (default values here):

    {
      "topL" : "╔",
      "bottomL" : "╚",
      "topR" : "╗",
      "bottomR" : "╝",
      "vertical" : "║",
      "horizontal" : "═"
    }

  Draws a box to the buffer.
• .textIntoX(y, x, text)
  • y, x : position to draw
  • text : text to draw
    Writes some text into the buffer, horizontally.
• .textIntoY(y, x, text)
  • y, x : position to draw
  • text : text to draw
    Writes some text into the buffer, vertically.
• .arrayToX(y, x, array)
  • y, x : position to overwrite
  • array : array to overwrite
    Overwrites a section of the buffer with array, horizontally.
• .arrayToY(y, x, array)
  • y, x : position to overwrite
  • array : array to overwrite
    Overwrites a section of the buffer with array, vertically.
• d2ToBuffer(y, x, array)
  • y, x : position to overwrite
  • array : array to overwrite
    Same as .arrayToX or .arrayToY, but instead of writing in a specific direction, takes a whole 2D array.