[BUG] transitionDuration in CSSParsedDecleration is parsing incorrectly

[DanielBelmes]

Please make sure you are testing with the latest release of html2canvas.
Old versions are not supported and issues reported for them will be closed.

Please follow the general troubleshooting steps first:

• You are using the latest version
• You are testing using the non-minified version of html2canvas and checked any potential issues reported in the console

Bug reports:

I'm exporting a canvas of Kibana and it is failing when parsing the style
CSSParsedDeclaration.transitionDuration = "0.15s, 0.15s, 0.15s, 0.15s" Tokens parsed out too.

[
    {
        "type": 15,
        "number": 0.15,
        "flags": 8,
        "unit": "s"
    },
    {
        "type": 4
    },
    {
        "type": 31
    },
    {
        "type": 15,
        "number": 0.15,
        "flags": 8,
        "unit": "s"
    },
    {
        "type": 4
    },
    {
        "type": 31
    },
    {
        "type": 15,
        "number": 0.15,
        "flags": 8,
        "unit": "s"
    },
    {
        "type": 4
    },
    {
        "type": 31
    },
    {
        "type": 15,
        "number": 0.15,
        "flags": 8,
        "unit": "s"
    }
]

When it reaches parseComponentValue it triggers throw new SyntaxError(Error parsing CSS component value, multiple values found when expecting only one); Because of {type: 4}.

PR that caused this #2632

Specifications:

• html2canvas version tested with: 1.3.0
• Browser & version: Chrome 91.0.4472.114
• Operating system: Mac Os Catalina

[AgentSmith0]

I can confirm this issue. I have the same problem.

[niklasvh]

Thanks for the report, should be fixed with 1.3.1