`FileReader`

Interface defined in File API (spec). Inherits from EventTarget; inherited members are listed on those pages.

FileReader per engine
Engine	Interface	Members present
warpdom0.1.6maintainer's engine	Present	100% (17 of 17)None missing.
happy-dom21.0.3	Present	29% (5 of 17)Missing: `EMPTY`, `LOADING`, `DONE`, `readyState`, `result`, `error`, `onloadstart`, `onprogress`, `onload`, `onabort`, `onerror`, `onloadend`
jsdom30.1.3	Present	100% (17 of 17)None missing.
linkedom0.18.13	Missing	0% (0 of 17)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.

File API17 members

FileReader members from File API
Member	warpdommaintainer's engine	happy-dom	jsdom	linkedom
`readAsArrayBuffer`method	warpdom: yes	happy-dom: yes	jsdom: yes	linkedom: no
`readAsBinaryString`method	warpdom: yes	happy-dom: yes	jsdom: yes	linkedom: no
`readAsText`method	warpdom: yes	happy-dom: yes	jsdom: yes	linkedom: no
`readAsDataURL`method	warpdom: yes	happy-dom: yes	jsdom: yes	linkedom: no
`abort`method	warpdom: yes	happy-dom: yes	jsdom: yes	linkedom: no
`EMPTY`constant	warpdom: yes	happy-dom: no	jsdom: yes	linkedom: no
`LOADING`constant	warpdom: yes	happy-dom: no	jsdom: yes	linkedom: no
`DONE`constant	warpdom: yes	happy-dom: no	jsdom: yes	linkedom: no
`readyState`attribute	warpdom: yes	happy-dom: no	jsdom: yes	linkedom: no
`result`attribute	warpdom: yes	happy-dom: no	jsdom: yes	linkedom: no
`error`attribute	warpdom: yes	happy-dom: no	jsdom: yes	linkedom: no
`onloadstart`attribute	warpdom: yes	happy-dom: no	jsdom: yes	linkedom: no
`onprogress`attribute	warpdom: yes	happy-dom: no	jsdom: yes	linkedom: no
`onload`attribute	warpdom: yes	happy-dom: no	jsdom: yes	linkedom: no
`onabort`attribute	warpdom: yes	happy-dom: no	jsdom: yes	linkedom: no
`onerror`attribute	warpdom: yes	happy-dom: no	jsdom: yes	linkedom: no
`onloadend`attribute	warpdom: yes	happy-dom: no	jsdom: yes	linkedom: no

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