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HS: dispatch hyperscript:beforeFetch before fetch IO
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Store target element in meta.owner when hs-on fires;
hs-fetch-impl dispatches beforeFetch on it before the perform.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
giles
2026-04-27 02:45:52 +00:00
parent 4baf16ac13
commit c4d9efc8c4
2 changed files with 10 additions and 2 deletions
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6
lib/hyperscript/runtime.sx
View File

@@ -69,7 +69,7 @@
(fn
(target event-name handler)
(let
((wrapped (fn (event) (do (host-set! meta "caller" _hs-on-caller) (let ((__hs-no-stop false)) (guard (e ((and (not (= event-name "exception")) (not (= event-name "error"))) (do (when (and (list? e) (= (first e) "hs-halt-default")) (set! __hs-no-stop true)) (when (not __hs-no-stop) (dom-dispatch target "exception" {:error e})))) (true (raise e))) (handler event)) (when (not __hs-no-stop) (host-call event "stopPropagation")))))))
((wrapped (fn (event) (do (host-set! meta "caller" _hs-on-caller) (host-set! meta "owner" target) (let ((__hs-no-stop false)) (guard (e ((and (not (= event-name "exception")) (not (= event-name "error"))) (do (when (and (list? e) (= (first e) "hs-halt-default")) (set! __hs-no-stop true)) (when (not __hs-no-stop) (dom-dispatch target "exception" {:error e})))) (true (raise e))) (handler event)) (when (not __hs-no-stop) (host-call event "stopPropagation")))))))
(let
((unlisten (dom-listen target event-name wrapped))
(prev (or (dom-get-data target "hs-unlisteners") (list))))
@@ -900,6 +900,10 @@
((or (= format "text") (= format "Text")) "text")
((or (= format "number") (= format "Number")) "number")
(true "text"))))
(let
((_hs-before-caller (host-get meta "owner")))
(when _hs-before-caller
(dom-dispatch _hs-before-caller "hyperscript:beforeFetch" {:url url})))
(let
((raw (perform (list "io-fetch" url fmt))))
(begin

6
shared/static/wasm/sx/hs-runtime.sx
View File

@@ -69,7 +69,7 @@
(fn
(target event-name handler)
(let
((wrapped (fn (event) (do (host-set! meta "caller" _hs-on-caller) (let ((__hs-no-stop false)) (guard (e ((and (not (= event-name "exception")) (not (= event-name "error"))) (do (when (and (list? e) (= (first e) "hs-halt-default")) (set! __hs-no-stop true)) (when (not __hs-no-stop) (dom-dispatch target "exception" {:error e})))) (true (raise e))) (handler event)) (when (not __hs-no-stop) (host-call event "stopPropagation")))))))
((wrapped (fn (event) (do (host-set! meta "caller" _hs-on-caller) (host-set! meta "owner" target) (let ((__hs-no-stop false)) (guard (e ((and (not (= event-name "exception")) (not (= event-name "error"))) (do (when (and (list? e) (= (first e) "hs-halt-default")) (set! __hs-no-stop true)) (when (not __hs-no-stop) (dom-dispatch target "exception" {:error e})))) (true (raise e))) (handler event)) (when (not __hs-no-stop) (host-call event "stopPropagation")))))))
(let
((unlisten (dom-listen target event-name wrapped))
(prev (or (dom-get-data target "hs-unlisteners") (list))))
@@ -900,6 +900,10 @@
((or (= format "text") (= format "Text")) "text")
((or (= format "number") (= format "Number")) "number")
(true "text"))))
(let
((_hs-before-caller (host-get meta "owner")))
(when _hs-before-caller
(dom-dispatch _hs-before-caller "hyperscript:beforeFetch" {:url url})))
(let
((raw (perform (list "io-fetch" url fmt))))
(begin