fix typos, use shorthanded imports (#5993)

* fix(typo): existance -> existence

* fix(typo): seperate -> separate

* refactor(imports): use shorthand for periscopic

src/compiler/compile/css/Selector.ts

@@ -545,11 +545,11 @@ function has_definite_elements(result: Map<Element, NodeExist>): boolean {
 
 function add_to_map(from: Map<Element, NodeExist>, to: Map<Element, NodeExist>) {
 	from.forEach((exist, element) => {
-		to.set(element, higher_existance(exist, to.get(element)));
+		to.set(element, higher_existence(exist, to.get(element)));
 	});
 }
 
-function higher_existance(exist1: NodeExist | null, exist2: NodeExist | null): NodeExist {
+function higher_existence(exist1: NodeExist | null, exist2: NodeExist | null): NodeExist {
 	if (exist1 === undefined || exist2 === undefined) return exist1 || exist2;
 	return exist1 > exist2 ? exist1 : exist2;
 }

src/compiler/compile/render_dom/index.ts

@@ -3,7 +3,7 @@ import Component from '../Component';
 import Renderer from './Renderer';
 import { CompileOptions, CssResult } from '../../interfaces';
 import { walk } from 'estree-walker';
-import { extract_names, Scope } from '../utils/scope';
+import { extract_names, Scope } from 'periscopic';
 import { invalidate } from './invalidate';
 import Block from './Block';
 import { ClassDeclaration, FunctionExpression, Node, Statement, ObjectExpression, Expression } from 'estree';

src/compiler/compile/render_dom/invalidate.ts

@@ -1,5 +1,5 @@
 import { nodes_match } from '../../utils/nodes_match';
-import { Scope } from '../utils/scope';
+import { Scope } from 'periscopic';
 import { x } from 'code-red';
 import { Node, Expression } from 'estree';
 import Renderer from './Renderer';
@@ -52,7 +52,7 @@ export function invalidate(renderer: Renderer, scope: Scope, node: Node, names:
 	if (is_store_value) {
 		return x`@set_store_value(${head.name.slice(1)}, ${node}, ${head.name}, ${extra_args})`;
 	}
-	
+
 	let invalidate;
 	if (!main_execution_context) {
 		const pass_value = (

src/runtime/internal/dev.ts

@@ -203,7 +203,7 @@ export interface SvelteComponentTyped<
  * class ASubclassOfSvelteComponent extends SvelteComponent<{foo: string}> {}
  * const component: typeof SvelteComponent = ASubclassOfSvelteComponent;
  * ```
- * will throw a type error, so we need to seperate the more strictly typed class.
+ * will throw a type error, so we need to separate the more strictly typed class.
  */
 export class SvelteComponentTyped<
 	Props extends Record<string, any> = any,