Coverage / html / CustomElementRegistry

`CustomElementRegistry`

Interface defined in HTML (spec).

CustomElementRegistry per engine
Engine	Interface	Members present
warpdom0.1.6maintainer's engine	Present`new CustomElementRegistry()` threw: `TypeError: Illegal constructor`	83% (5 of 6)Missing: `initialize`
happy-dom21.0.3	Present`new CustomElementRegistry()` threw: `TypeError: Illegal constructor`	83% (5 of 6)Missing: `initialize`
jsdom30.1.3	Present`new CustomElementRegistry()` threw: `TypeError: Illegal constructor`	83% (5 of 6)Missing: `initialize`
linkedom0.18.13	Missing	0% (0 of 6)Interface not defined.

An interface can be present while some of its members are missing; the table lists them per engine. Existence only: “present” means the name is defined where Web IDL puts it (the prototype, the interface object for constants and static members, or the window itself for Window), not that it behaves as the standard says.

HTML6 members

CustomElementRegistry members from HTML
Member	warpdommaintainer's engine	happy-dom	jsdom	linkedom
`define`method	warpdom: yes	happy-dom: yes	jsdom: yes	linkedom: no
`get`method	warpdom: yes	happy-dom: yes	jsdom: yes	linkedom: no
`getName`method	warpdom: yes	happy-dom: yes	jsdom: yes	linkedom: no
`whenDefined`method	warpdom: yes	happy-dom: yes	jsdom: yes	linkedom: no
`upgrade`method	warpdom: yes	happy-dom: yes	jsdom: yes	linkedom: no
`initialize`method	warpdom: no	happy-dom: no	jsdom: no	linkedom: no

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