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Change Log

1.15.3

2018-11-28

  • Fix bug that incorrectly transformed variable functions that resolve to values containing parenthesis with fallback values that also contain parenthesis (#42).

1.15.2

2018-11-24

  • Updated README with options.onlyLegacy examples.

1.15.1

2018-11-14

  • Fixed bug that prevented IE10 from fetching <link> CSS data from external domains.

1.15.0

2018-11-12

  • Updated options.onSuccess callback to better handle falsey return values (e.g. false, null, 0, "").

1.14.0

2018-11-11

  • Updated get-css-data dependency and added test for invalid <link> CSS text (test for HTML returned from stylesheet 404 redirect).

1.13.0

2018-11-09

  • Added ability to change the ponyfill settings used by the options.watch MutationObserver by setting options.watch set to true.

  • Added ability to disconnect the ponyfill MutationObserver by setting options.watch to false.

1.12.2

2018-11-06

  • Updated options.onComplete callback to return a clone instead of a reference to the internal variable storage object as the cssVariables argument.

  • Fixed bug that prevented options.variables values from persisting properly (regression introduced in 1.11.0).

1.12.1

2018-11-04

  • Fixed bug that caused the options.onComplete callback's cssVariables argument to be returned as an empty object when options.updateDOM is set to false.

1.12.0

2018-10-25

  • Added TypeScript definitions.

1.11.1-3

2018-10-24

  • Fixed bug in modern browsers that caused options.variables values to be applied to the document instead of the options.rootElement, resulting in custom properties being applied to all elements instead of scoped to the specified root element.

1.11.0

2018-10-03

  • Added logic to automatically get document-level CSS custom property values when options.rootElement has been set to a shadow host or root. These values are required by the polyfill to transform shadow <link> and <style> nodes. This new behavior makes it possible to target a shadow host or root element without manually getting the document-level custom property values first.

  • Fixed custom property values not persisting when CSS being processed contains only custom properties.

  • Fixed ‘document is not defined’ error in SSR environment introduced in 1.10.0.

1.10.0

2018-09-28

  • Added options.rootElement for specifying the root element to traverse for <link> and <style> nodes.

  • Added options.shadowDOM to determine if shadow DOM <link> and <style> nodes should be processed.

  • Added cssVariables argument to options.onComplete callback.

1.9.0

2018-08-07

  • Added check for non-browser environments to support Node+SSR. (#16)

  • Updated keyframe animation fix to support legacy browsers that require vendor prefixes for animation-name and @keyframes.

  • Fixed internal placeholder comments appearing in CSS output instead of stylesheet content. (#15)

  • Fixed multiple var() functions resolving to undefined when they do not resolve to a custom property or fallback value. (#18)

1.8.0

2018-07-12

  • Added options.watch feature which creates a MutationObserver that will execute the ponyfill when a <link> or <style> DOM mutation is observed. (#8)

  • Added fix for browser-related bugs that prevent keyframe animations from being applied when values are initially set using custom properties or updated using the variables ponyfill options. (#13)

  • Fixed inaccurate “variable is undefined” console warning when a custom property value is 0 or false.

1.7.2

2018-05-20

  • Updated options.onError callback url argument so that it always returns an absolute URL.

  • Updated README with options.onError fixes and a few other minor tweaks.

1.7.1

2018-05-19

  • Fixed options.onError message sent to console so that a URL is included when the status code is 0. Also added a hint that these errors are possibly related to CORS restrictions to assist debugging efforts.

  • Updated README with performance tips and better examples for options.include and options.exclude.

1.7.0

2018-05-18

  • Improved performance when processing <link> and <style> data that does not contain a CSS custom property declaration or function. (#9)

1.6.0

2018-05-17

  • Added options.updateURLs for converting relative url() paths to absolute urls. (#8)

1.5.0

2018-05-16

  • Added options.onBeforeSend callback. (#7)

  • Changed options.onSuccess callback so that it is called after CSS data has been collected from each node before CSS custom properties have been transformed.

1.4.0

2018-04-23

  • Updated get-css-data dependency to 1.2.0 to resolve a callback related bug.

  • Updated logic for inserting generated <style> element. Element is now inserted after the last <style> or <link> node processed. This change, combined with the proceeding change, ensures that the original cascade order is maintained after the transformed styles are appended to the DOM.

  • Updated options.onlyVars default value from true to false. This change, combined with the preceding change, ensures that the original cascade order is maintained after the transformed styles are appended to the DOM.

1.3.0

2018-04-17

  • Added fixNestedCalc option to remove nested calc keywords for legacy browser compatibility.

1.2.2

2018-03-24

  • Updated README Examples section.

1.2.1

2018-03-20

  • Updated README Examples section.

1.2.0

2018-03-20

  • Fixed "Cannot read property 'length' of undefined" bug triggered while filtering comments that are a direct descendant of an at-rule. (#1)

1.1.2

2018-03-12

  • Updated README browser support table.

1.1.1

2018-03-12

  • Updated README: Added TOC, added demo link, added browser support table, updated examples.

1.1.0

2018-02-08

  • Fixed bug that prevented options.onlyVars from properly filtering declarations that do not contain a custom property value or function.

  • Updated options.preserve default value from true to false. This aligns with other default values which assume a "legacy-only" configuration.

  • Updated logic for inserting generated <style> element. Element is now inserted as first CSS source node rather than the last. This allows the cascade order to be maintained when options.onlyVars is true.

1.0.0

2018-01-31

  • Initial release