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regx
Tagged template string regular expression compiler. Supports multiline expressions, partials, and embedded comments.
$ npm install --save regx
import regx from 'regx';
// RegExp partial to match opening block comment (flags ignored)
const openPartial = /\/\*\*/i;
// String partial to match closing block comment (extra escaping required)
const closePartial = '\\*\\/';
// Time to write a human-readable expression
const expression = regx('gm')`
// Match a non-recursive block comment
(
// Must be first thing on a line
^[\t ]*
${openPartial} // Block opener
// Capture content independently
(
// Match any character including newlines (non-greedy)
[\s\S]*?
)
${closePartial} // Block closer
)
// Grab trailing newlines and discard them
[\r\n]*
`;
// The result is the same as if you had written the following
const expression = /(^[\t ]*\/\*\*([\s\S]*?)\*\/)[\r\n]*/gm;
regx([flags]) : regxTagFunction
Creates a template-string tag function. Optionally accepts RegExp flags.
const a = regx('gm')`
^ // start of line
a+ // one or more 'a' characters
$ // end of line
`; // result: /^a+$/gm
regxTagFunction(strings, ...values) : RegExp
The functions returned by regx()
may be cached and reused.
const rx = regx('gm');
const a = rx`
^ // start of line
a+ // one or more 'a' characters
$ // end of line
`; // result: /^a+$/gm
const b = rx`
^ // start of line
b+ // one or more 'b' characters
$ // end of line
`; // result: /^b+$/gm
All whitespace at the beginning and end of each line is ignored. To match literal whitespace at the beginning or end of a line you must use a character set.
const rx = regx('i');
const spaceBefore = rx`
[ ]foo bar
`; // result: /[ ]foo bar/i
const spaceAfter = rx`
foo bar[ ]
`; // result: /foo bar[ ]/i
© 2016 Shannon Moeller me@shannonmoeller.com
Licensed under MIT
FAQs
Tagged template string regular expression compiler.
The npm package regx receives a total of 34,230 weekly downloads. As such, regx popularity was classified as popular.
We found that regx demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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