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| # cliui | |
|  | |
| [](https://www.npmjs.com/package/cliui) | |
| [](https://conventionalcommits.org) | |
|  | |
| easily create complex multi-column command-line-interfaces. | |
| ## Example | |
| ```js | |
| const ui = require('cliui')() | |
| ui.div('Usage: $0 [command] [options]') | |
| ui.div({ | |
| text: 'Options:', | |
| padding: [2, 0, 1, 0] | |
| }) | |
| ui.div( | |
| { | |
| text: "-f, --file", | |
| width: 20, | |
| padding: [0, 4, 0, 4] | |
| }, | |
| { | |
| text: "the file to load." + | |
| chalk.green("(if this description is long it wraps).") | |
| , | |
| width: 20 | |
| }, | |
| { | |
| text: chalk.red("[required]"), | |
| align: 'right' | |
| } | |
| ) | |
| console.log(ui.toString()) | |
| ``` | |
| ## Deno/ESM Support | |
| As of `v7` `cliui` supports [Deno](https://github.com/denoland/deno) and | |
| [ESM](https://nodejs.org/api/esm.html#esm_ecmascript_modules): | |
| ```typescript | |
| import cliui from "https://deno.land/x/cliui/deno.ts"; | |
| const ui = cliui({}) | |
| ui.div('Usage: $0 [command] [options]') | |
| ui.div({ | |
| text: 'Options:', | |
| padding: [2, 0, 1, 0] | |
| }) | |
| ui.div({ | |
| text: "-f, --file", | |
| width: 20, | |
| padding: [0, 4, 0, 4] | |
| }) | |
| console.log(ui.toString()) | |
| ``` | |
| <img width="500" src="screenshot.png"> | |
| ## Layout DSL | |
| cliui exposes a simple layout DSL: | |
| If you create a single `ui.div`, passing a string rather than an | |
| object: | |
| * `\n`: characters will be interpreted as new rows. | |
| * `\t`: characters will be interpreted as new columns. | |
| * `\s`: characters will be interpreted as padding. | |
| **as an example...** | |
| ```js | |
| var ui = require('./')({ | |
| width: 60 | |
| }) | |
| ui.div( | |
| 'Usage: node ./bin/foo.js\n' + | |
| ' <regex>\t provide a regex\n' + | |
| ' <glob>\t provide a glob\t [required]' | |
| ) | |
| console.log(ui.toString()) | |
| ``` | |
| **will output:** | |
| ```shell | |
| Usage: node ./bin/foo.js | |
| <regex> provide a regex | |
| <glob> provide a glob [required] | |
| ``` | |
| ## Methods | |
| ```js | |
| cliui = require('cliui') | |
| ``` | |
| ### cliui({width: integer}) | |
| Specify the maximum width of the UI being generated. | |
| If no width is provided, cliui will try to get the current window's width and use it, and if that doesn't work, width will be set to `80`. | |
| ### cliui({wrap: boolean}) | |
| Enable or disable the wrapping of text in a column. | |
| ### cliui.div(column, column, column) | |
| Create a row with any number of columns, a column | |
| can either be a string, or an object with the following | |
| options: | |
| * **text:** some text to place in the column. | |
| * **width:** the width of a column. | |
| * **align:** alignment, `right` or `center`. | |
| * **padding:** `[top, right, bottom, left]`. | |
| * **border:** should a border be placed around the div? | |
| ### cliui.span(column, column, column) | |
| Similar to `div`, except the next row will be appended without | |
| a new line being created. | |
| ### cliui.resetOutput() | |
| Resets the UI elements of the current cliui instance, maintaining the values | |
| set for `width` and `wrap`. | |