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postcss-strip-units's Issues

Error when using with PostCSS 6.0.2

Got the error below when trying out this plugin for the first time, in a PostCSS plugin stack that looks like this:

postcss-easy-import
postcss-nesting
postcss-strip-units
postcss-cssnext
postcss-normalize
postcss-reporter

Your current PostCSS version is 6.0.2, but postcss-strip uses 5.2.17. Perhaps this is the source of the error below.

events.js:160
      throw er; // Unhandled 'error' event
      ^
TypeError: Could not parse `strip(var(--column))`. Got `NaN`
    at /project-directory/node_modules/postcss-strip-units/lib/transformStrip.js:27:19
    at evalFunctionCall (/project-directory/node_modules/reduce-function-call/index.js:73:10)
    at /project-directory/node_modules/reduce-function-call/index.js:23:82
    at Array.reduce (native)
    at reduceFunctionCall (/project-directory/node_modules/reduce-function-call/index.js:22:47)
    at transformStrip (/project-directory/node_modules/postcss-strip-units/lib/transformStrip.js:4:12)
    at transformStripValue (/project-directory/node_modules/postcss-strip-units/index.js:15:34)
    at Object.tryCatch [as try] (/project-directory/node_modules/postcss-message-helpers/index.js:53:12)
    at transformValue (/project-directory/node_modules/postcss-strip-units/index.js:14:24)
    at /project-directory/node_modules/postcss-strip-units/index.js:23:24

Error when using with PostCSS 7.0.14

I was trying this plugin for the first time, and I ran into an error. Even if I don't call the strip() function in my code, I still receive the same error messages (3 times to be precise):

Unknown error from PostCSS plugin. Your current PostCSS version is 7.0.14, but postcss-strip uses 4.1.16. Perhaps this is the source of the error below.
css.eachDecl is not a function

This is how I'm calling it in my gulpfile.js:

var stripe = require('postcss-strip');

.pipe( plugin.postcss( [
	cssvariables(),
	colormod(),
	stripe( {
		functionName : 'removeUnit'
	} ),
	rem( {
		fallback: true,
	} ),
] ) )

Is it possible to put calc() inside strip()?

When I put calc() function inside strip(), I get an error saying Couldn't parse strip(calc(24px * 2)). Got NaN.

I think this error occurs because postcss-strip-units is added before postcss-calc.
So I added postcss-calc twice before and after postcss-strip-units, but unfortunately it didn't work at all.

Any idea to achieve this or workaround?

The code is something like below.

variables.css

:root {
    --a-size: 24px;
    --b-size: calc(var(--a-size) * 2);
}

type.css

h1 {
    font-size: calc(strip(var(--b-size)) * 1 rem); /* => Couldn't parse strip(calc(24px * 2)) => NaN */
}

main.css

@import 'variables.css';
@import 'type.css';

PostCSS plugins order

require('postcss-devtools')(),
require('postcss-easy-import')({addDependencyTo: webpack,prefix: '_'}),
require('postcss-url')(),
require('postcss-mixins')(),
require('postcss-extend')(),
require('postcss-each')(),
require('postcss-for')(),
require('postcss-nth-list')(),
require('postcss-simple-vars')(),
require('postcss-custom-properties')(),
require('postcss-strip-units')(),
require('postcss-conditionals')(),
require('postcss-calc')({warnWhenCannotResolve: true}),
require('postcss-cssnext')({browsers: 'last 2 versions'}),
require('css-mqpacker')(),
require('postcss-utilities')(),
require('postcss-browser-reporter')(),
require('postcss-reporter')()

Need for calc() inside strip()

Hey! I need to be able to put calc() inside the strip() function. I'm requesting this because it's something that the plugin is not able to do so far. This is my situation example:

--space-xl: calc( var(--space-unit) * 3.25 );

.class-name {
	margin-left: calc((strip(var(--space-xl)) * 16) / 100);
}

As you might imagine, I need to keep the --space-xl variable value as a dynamic one in order to allow a lot of other different elements to work dynamically too.

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