Function parseAsAttributes

Parses input in the form of: ['elementid-attribute', 'default-value']. Eg, ['indicator-fill', 'gray'] will yield:

{ variable: `indicator-fill`, attribute: `fill`, id: `indicator`, defaultValue: `gray` }
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Once parsed, use setFromVariables to apply data.

// Array of arrays is treated as a set of key-value pairs
const options = [ [`indicator-fill`, `gray`], [`backdrop-fill`, `whitesmoke`] ]
const attrs = parseAsAttributes(options);
Yields:
[
 { variable: `indicator-fill`, attribute: `fill`, id: `indicator`, defaultValue: `gray` }
 { variable: `backdrop-fill`, attribute: `fill`, id: `backdrop`, defaultValue: `whitesmoke` }
]

// Assign
setFromCssVariables(document.body, attrs);
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