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Detect the indentation of code
Pass in a string of any kind of text and get the indentation.
$ npm install --save detect-indent
// modify a JSON file while persisting the indentation in Node
var fs = require('fs');
var detectIndent = require('detect-indent');
/*
{
"ilove": "pizza"
}
*/
var file = fs.readFileSync('foo.json', 'utf8');
// tries to detect the indentation and falls back to a default if it can't
var indent = detectIndent(file).indent || ' ';
var json = JSON.parse(file);
json.ilove = 'unicorns';
fs.writeFileSync('foo.json', JSON.stringify(json, null, indent));
/*
{
"ilove": "unicorns"
}
*/
Accepts a string and returns an object with stats about the indentation:
amount
: {Number} the amount of indentation, e.g. 2
type
: {String|Null} the type of indentation. Possible values are tab
, space
or null
if no indentation is detectedindent
: {String} the actual indentation$ npm install --global detect-indent
$ detect-indent --help
Usage
detect-indent <file>
echo <string> | detect-indent
Example
echo ' foo\n bar' | detect-indent | wc --chars
2
Look for the most common difference between two consecutive non-empty lines.
MIT © Sindre Sorhus