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src/lustre.erl

-module(lustre).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).
-export([application/3, element/1, simple/3, component/5, start/3, destroy/1, is_browser/0, is_registered/1]).
-export_type([app/3, error/0]).
-opaque app(HSZ, HTA, HTB) :: app | {gleam_phantom, HSZ, HTA, HTB}.
-type error() :: app_already_started |
app_not_yet_started |
bad_component_name |
component_already_registered |
element_not_found |
not_a_browser.
-spec application(
fun((HTO) -> {HTP, lustre@effect:effect(HTQ)}),
fun((HTP, HTQ) -> {HTP, lustre@effect:effect(HTQ)}),
fun((HTP) -> lustre@element:element(HTQ))
) -> app(HTO, HTP, HTQ).
application(_, _, _) ->
gleam@dynamic:unsafe_coerce(gleam@dynamic:from(nil)).
-spec element(lustre@element:element(HTC)) -> app(nil, nil, HTC).
element(Element) ->
Init = fun(_) -> {nil, lustre@effect:none()} end,
Update = fun(_, _) -> {nil, lustre@effect:none()} end,
View = fun(_) -> Element end,
application(Init, Update, View).
-spec simple(
fun((HTH) -> HTI),
fun((HTI, HTJ) -> HTI),
fun((HTI) -> lustre@element:element(HTJ))
) -> app(HTH, HTI, HTJ).
simple(Init, Update, View) ->
Init@1 = fun(Flags) -> {Init(Flags), lustre@effect:none()} end,
Update@1 = fun(Model, Msg) -> {Update(Model, Msg), lustre@effect:none()} end,
application(Init@1, Update@1, View).
-spec component(
binary(),
fun(() -> {HTX, lustre@effect:effect(HTY)}),
fun((HTX, HTY) -> {HTX, lustre@effect:effect(HTY)}),
fun((HTX) -> lustre@element:element(HTY)),
gleam@dict:dict(binary(), fun((gleam@dynamic:dynamic_()) -> {ok, HTY} |
{error, list(gleam@dynamic:decode_error())}))
) -> {ok, nil} | {error, error()}.
component(_, _, _, _, _) ->
{ok, nil}.
-spec start(app(HUH, any(), HUJ), binary(), HUH) -> {ok, fun((HUJ) -> nil)} |
{error, error()}.
start(_, _, _) ->
{error, not_a_browser}.
-spec destroy(app(any(), any(), any())) -> {ok, nil} | {error, error()}.
destroy(_) ->
{ok, nil}.
-spec is_browser() -> boolean().
is_browser() ->
false.
-spec is_registered(binary()) -> boolean().
is_registered(_) ->
false.