Documentation

HTML: parse errors (constructor names directly reflect the identifiers in the spec)

Indicators that something syntactically unexpected was found in an HTML file. Given the focus on recovery in the parse algorithm, these are more properly warnings than errors, but the name follows that in the specification.

This datatype consists of the union of the errors raised by any of the various stages of the algorithm; no distinction is made between an "encoding error" and a "tree-building error".

Several constructors wrap a payload which would otherwise be unrecoverable from the DOM, to enable richer error reporting.