Merge pull request #483 from sveltejs/gh-479

Clone data before `set`
pull/487/head
Rich Harris 8 years ago committed by GitHub
commit cc21db37c3

@ -1,5 +1,4 @@
export * from './dom.js';
export * from './methods.js';
export function noop () {}
@ -38,3 +37,102 @@ export function dispatchObservers ( component, group, newState, oldState ) {
}
}
}
export function get ( key ) {
return key ? this._state[ key ] : this._state;
}
export function fire ( eventName, data ) {
var handlers = eventName in this._handlers && this._handlers[ eventName ].slice();
if ( !handlers ) return;
for ( var i = 0; i < handlers.length; i += 1 ) {
handlers[i].call( this, data );
}
}
export function observe ( key, callback, options ) {
var group = ( options && options.defer ) ? this._observers.post : this._observers.pre;
( group[ key ] || ( group[ key ] = [] ) ).push( callback );
if ( !options || options.init !== false ) {
callback.__calling = true;
callback.call( this, this._state[ key ] );
callback.__calling = false;
}
return {
cancel: function () {
var index = group[ key ].indexOf( callback );
if ( ~index ) group[ key ].splice( index, 1 );
}
};
}
export function observeDev ( key, callback, options ) {
var c = ( key = '' + key ).search( /[^\w]/ );
if ( c > -1 ) {
var message = "The first argument to component.observe(...) must be the name of a top-level property";
if ( c > 0 ) message += ", i.e. '" + key.slice( 0, c ) + "' rather than '" + key + "'";
throw new Error( message );
}
return observe.call( this, key, callback, options );
}
export function on ( eventName, handler ) {
if ( eventName === 'teardown' ) return this.on( 'destroy', handler );
var handlers = this._handlers[ eventName ] || ( this._handlers[ eventName ] = [] );
handlers.push( handler );
return {
cancel: function () {
var index = handlers.indexOf( handler );
if ( ~index ) handlers.splice( index, 1 );
}
};
}
export function onDev ( eventName, handler ) {
if ( eventName === 'teardown' ) {
console.warn( "Use component.on('destroy', ...) instead of component.on('teardown', ...) which has been deprecated and will be unsupported in Svelte 2" );
return this.on( 'destroy', handler );
}
return on.call( this, eventName, handler );
}
export function set ( newState ) {
this._set( assign( {}, newState ) );
( this._root || this )._flush();
}
export function _flush () {
if ( !this._renderHooks ) return;
while ( this._renderHooks.length ) {
var hook = this._renderHooks.pop();
hook.fn.call( hook.context );
}
}
export var proto = {
get: get,
fire: fire,
observe: observe,
on: on,
set: set,
_flush: _flush
};
export var protoDev = {
get: get,
fire: fire,
observe: observeDev,
on: onDev,
set: set,
_flush: _flush
};

@ -1,98 +0,0 @@
export function get ( key ) {
return key ? this._state[ key ] : this._state;
}
export function fire ( eventName, data ) {
var handlers = eventName in this._handlers && this._handlers[ eventName ].slice();
if ( !handlers ) return;
for ( var i = 0; i < handlers.length; i += 1 ) {
handlers[i].call( this, data );
}
}
export function observe ( key, callback, options ) {
var group = ( options && options.defer ) ? this._observers.post : this._observers.pre;
( group[ key ] || ( group[ key ] = [] ) ).push( callback );
if ( !options || options.init !== false ) {
callback.__calling = true;
callback.call( this, this._state[ key ] );
callback.__calling = false;
}
return {
cancel: function () {
var index = group[ key ].indexOf( callback );
if ( ~index ) group[ key ].splice( index, 1 );
}
};
}
export function observeDev ( key, callback, options ) {
var c = ( key = '' + key ).search( /[^\w]/ );
if ( c > -1 ) {
var message = "The first argument to component.observe(...) must be the name of a top-level property";
if ( c > 0 ) message += ", i.e. '" + key.slice( 0, c ) + "' rather than '" + key + "'";
throw new Error( message );
}
return observe.call( this, key, callback, options );
}
export function on ( eventName, handler ) {
if ( eventName === 'teardown' ) return this.on( 'destroy', handler );
var handlers = this._handlers[ eventName ] || ( this._handlers[ eventName ] = [] );
handlers.push( handler );
return {
cancel: function () {
var index = handlers.indexOf( handler );
if ( ~index ) handlers.splice( index, 1 );
}
};
}
export function onDev ( eventName, handler ) {
if ( eventName === 'teardown' ) {
console.warn( "Use component.on('destroy', ...) instead of component.on('teardown', ...) which has been deprecated and will be unsupported in Svelte 2" );
return this.on( 'destroy', handler );
}
return on.call( this, eventName, handler );
}
export function set ( newState ) {
this._set( newState );
( this._root || this )._flush();
}
export function _flush () {
if ( !this._renderHooks ) return;
while ( this._renderHooks.length ) {
var hook = this._renderHooks.pop();
hook.fn.call( hook.context );
}
}
export var proto = {
get: get,
fire: fire,
observe: observe,
on: on,
set: set,
_flush: _flush
};
export var protoDev = {
get: get,
fire: fire,
observe: observeDev,
on: onDev,
set: set,
_flush: _flush
};

@ -0,0 +1,10 @@
export default {
dev: true,
test ( assert, component ) {
const obj = { a: 1 };
component.set( obj );
component.set( obj ); // will fail if the object is not cloned
component.destroy();
}
}

@ -0,0 +1,7 @@
<script>
export default {
computed: {
b: a => a + 1
}
};
</script>
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