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preserve
Advanced tools
Readme
Temporarily substitute tokens in the given
string
with placeholders, then put them back after transforming the string.
Useful for protecting tokens, like templates in HTML, from being mutated when the string is transformed in some way, like from a formatter/beautifier.
Example without preserve
Let's say you want to use js-beautify on a string of html with Lo-Dash/Underscore templates, such as: <ul><li><%= name %></li></ul>
:
js-beautify will render the template unusable (and apply incorrect formatting because of the unfamiliar syntax from the Lo-Dash template):
<ul>
<li>
<%=n ame %>
</li>
</ul>
Example with preserve
Correct.
<ul>
<li><%= name %></li>
</ul>
For the record, this is just a random example, I've had very few issues with js-beautify in general. But with or without js-beautify, this kind of token mangling does happen sometimes when you use formatters, beautifiers or similar tools.
npm i preserve --save
npm test
Replace tokens in str
with a temporary, heuristic placeholder.
str
{String}returns
{String}: String with placeholders.tokens.before('{a\\,b}');
//=> '{__ID1__}'
Replace placeholders in str
with original tokens.
str
{String}: String with placeholdersreturns
{String} str
: String with original tokens.tokens.after('{__ID1__}');
//=> '{a\\,b}'
Pull requests and stars are always welcome. For bugs and feature requests, please create an issue
Jon Schlinkert
Copyright (c) 2015-2015, Jon Schlinkert. Released under the MIT license
This file was generated by verb on January 10, 2015.
FAQs
Temporarily substitute tokens in the given `string` with placeholders, then put them back after transforming the string.
The npm package preserve receives a total of 1,836,264 weekly downloads. As such, preserve popularity was classified as popular.
We found that preserve 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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