Darien Maillet Valentine

The first column of [Table 15 (Plural Rules Operands Record Fields)](https://tc39.es/ecma402/#table-plural-operands) is mislabeled “Internal Slot”. Currently [Table 8 (Record returned by ToLocalTime)](https://tc39.es/ecma402/#table-datetimeformat-tolocaltime-record) uses “Field”. Both tables should probably say “Field...

“Realmless” ArrayBuffer creation in Body’s arrayBuffer() steps

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The `Body` mixin’s `arrayBuffer` operation steps are defined as: > [returning] the result of running consume body with _this_ and the following step given a byte sequence bytes: return a...

Suggestion: forbid ECMA-262/402-defined global names for some named constructs

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There are two reasons I think it’d be good for Web IDL to specify something like the following rough attempt: > A Web IDL construct which would imply defining properties...

The [define the static attributes](https://webidl.spec.whatwg.org/#define-the-static-attributes) algorithm describes its _definition_ parameter as an “interface or namespace”. Namespaces cannot have static attributes, though, and the algorithm is only ever invoked with interface...

Integrating [Float16Array](https://github.com/tc39/proposal-float16array) into Web IDL looks very straightforward (it effectively amounts to inserting `Float16Array` before every `Float32Array` in the text, sometimes with a comma), but I figured it deserved a...

Simple exceptions “apart from...” list is incomplete

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Web IDL enumerates the ES [Error object constructor](https://tc39.es/ecma262/#sec-error-objects) names that are usable in Web IDL for [simple exceptions](https://webidl.spec.whatwg.org/#dfn-simple-exception), but the text that follows the list also enumerates those which _aren’t:_...

In the [Names](https://webidl.spec.whatwg.org/#idl-names) section: > Within the set of IDL fragments that a given implementation supports, the identifier of every interface, namespace, dictionary, enumeration, callback function, callback interface and typedef...

Purpose of call-a-user-object’s-operation’s opName parameter

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Callback interfaces are required to have one-and-only-one regular operation\*. The single operation has a particular known name. However [call a user object’s operation](https://webidl.spec.whatwg.org/#call-a-user-objects-operation) requires an `opName` parameter. This permits the...

Decimal regular expression has “dead code” (so to speak)

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In `/-?(([0-9]+\.[0-9]*|[0-9]*\.[0-9]+)([Ee][+-]?[0-9]+)?|[0-9]+[Ee][+-]?[0-9]+)/` — _er, wait, I think this will be a little easier to see if we translate to an idiomatic ES pattern first._ In ```js /-?((\d+\.\d*|\d*\.\d+)(E[+-]?\d+)?|\d+E[+-]?\d+)/i ``` the second...

URLSearchParams append/set: variadic values argument?

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When assembling URLs with parameters where the same key is used with multiple values, I’ve often needed to set those multiple values at once and found the URLSearchParams API surface...