@ -2,38 +2,6 @@ export function noop() {}
export const identity = x = > x ;
export function assign < T , S > ( tar : T , src : S ) : T & S {
// @ts-ignore
for ( const k in src ) tar [ k ] = src [ k ] ;
return tar as T & S ;
}
export function is_promise < T = any > ( value : any ) : value is PromiseLike < T > {
return value && typeof value === 'object' && typeof value . then === 'function' ;
}
export function add_location ( element , file , line , column , char ) {
element . __svelte_meta = {
loc : { file , line , column , char }
} ;
}
export function run ( fn ) {
return fn ( ) ;
}
export function blank_object() {
return Object . create ( null ) ;
}
export function run_all ( fns ) {
fns . forEach ( run ) ;
}
export function is_function ( thing : any ) : thing is Function {
return typeof thing === 'function' ;
}
export function safe_not_equal ( a , b ) {
return a != a ? b == b : a !== b || ( ( a && typeof a === 'object' ) || typeof a === 'function' ) ;
}
@ -42,10 +10,15 @@ export function not_equal(a, b) {
return a != a ? b == b : a !== b ;
}
export function validate_store ( store , name ) {
if ( store != null && typeof store . subscribe !== 'function' ) {
throw new Error ( ` ' ${ name } ' is not a store with a 'subscribe' method ` ) ;
}
export function get_slot_changes ( definition , $ $scope , dirty , fn ) {
if ( ! definition [ 2 ] || ! fn ) return $ $scope . dirty ;
const lets = definition [ 2 ] ( fn ( dirty ) ) ;
if ( $ $scope . dirty === void 0 ) return lets ;
else if ( typeof lets === 'object' ) {
const merged = new Array ( Math . max ( $ $scope . dirty . length , lets . length ) ) ;
for ( let i = 0 ; i < merged . length ; i += 1 ) merged [ i ] = $ $scope . dirty [ i ] | lets [ i ] ;
return merged ;
} else return $ $scope . dirty | lets ;
}
export function subscribe ( store , . . . callbacks ) {
@ -56,94 +29,7 @@ export function subscribe(store, ...callbacks) {
return unsub . unsubscribe ? ( ) = > unsub . unsubscribe ( ) : unsub ;
}
export function get_store_value ( store ) {
let value ;
subscribe ( store , _ = > value = _ ) ( ) ;
return value ;
}
export function component_subscribe ( component , store , callback ) {
component . $ $ . on_destroy . push ( subscribe ( store , callback ) ) ;
}
export function create_slot ( definition , ctx , $ $scope , fn ) {
if ( definition ) {
const slot_ctx = get_slot_context ( definition , ctx , $ $scope , fn ) ;
return definition [ 0 ] ( slot_ctx ) ;
}
}
export function get_slot_context ( definition , ctx , $ $scope , fn ) {
return definition [ 1 ] && fn
? assign ( $ $scope . ctx . slice ( ) , definition [ 1 ] ( fn ( ctx ) ) )
: $ $scope . ctx ;
}
export function get_slot_changes ( definition , $ $scope , dirty , fn ) {
if ( definition [ 2 ] && fn ) {
const lets = definition [ 2 ] ( fn ( dirty ) ) ;
if ( $ $scope . dirty === undefined ) {
return lets ;
}
if ( typeof lets === 'object' ) {
const merged = [ ] ;
const len = Math . max ( $ $scope . dirty . length , lets . length ) ;
for ( let i = 0 ; i < len ; i += 1 ) {
merged [ i ] = $ $scope . dirty [ i ] | lets [ i ] ;
}
return merged ;
}
return $ $scope . dirty | lets ;
}
return $ $scope . dirty ;
}
export function update_slot ( slot , slot_definition , ctx , $ $scope , dirty , get_slot_changes_fn , get_slot_context_fn ) {
const slot_changes = get_slot_changes ( slot_definition , $ $scope , dirty , get_slot_changes_fn ) ;
if ( slot_changes ) {
const slot_context = get_slot_context ( slot_definition , ctx , $ $scope , get_slot_context_fn ) ;
slot . p ( slot_context , slot_changes ) ;
}
}
export function exclude_internal_props ( props ) {
const result = { } ;
for ( const k in props ) if ( k [ 0 ] !== '$' ) result [ k ] = props [ k ] ;
return result ;
}
export function compute_rest_props ( props , keys ) {
const rest = { } ;
keys = new Set ( keys ) ;
for ( const k in props ) if ( ! keys . has ( k ) && k [ 0 ] !== '$' ) rest [ k ] = props [ k ] ;
return rest ;
}
export function once ( fn ) {
let ran = false ;
return function ( this : any , . . . args ) {
if ( ran ) return ;
ran = true ;
fn . call ( this , . . . args ) ;
} ;
}
export function null_to_empty ( value ) {
return value == null ? '' : value ;
}
export function set_store_value ( store , ret , value = ret ) {
store . set ( value ) ;
return ret ;
}
export const has_prop = ( obj , prop ) = > Object . prototype . hasOwnProperty . call ( obj , prop ) ;
export function action_destroyer ( action_result ) {
return action_result && is_function ( action_result . destroy ) ? action_result.destroy : noop ;
}
pushkine
5 years ago