use snake_case for method names

src/compiler/compile/render_dom/index.ts

@@ -45,7 +45,7 @@ export default function dom(
 	if (should_add_css) {
 		body.push(b`
 			function ${add_css}(target) {
-				@appendStyleIfNotPresent(target, "${component.stylesheet.id.replace('svelte-', '')}", "${styles}");
+				@append_style_if_not_present(target, "${component.stylesheet.id.replace('svelte-', '')}", "${styles}");
 			}
 		`);
 	}
@@ -529,7 +529,7 @@ export default function dom(
 				constructor(options) {
 					super(${options.dev && 'options'});
 
-					${should_add_css && b`@addCssToComponent(this, ${add_css}, options);`}
+					${should_add_css && b`@add_css_to_component(this, ${add_css}, options);`}
 
 					@init(this, options, ${definition}, ${has_create_fragment ? 'create_fragment' : 'null'}, ${not_equal}, ${prop_indexes}, ${dirty});
 					${options.dev && b`@dispatch_dev("SvelteRegisterComponent", { component: this, tagName: "${name.name}", options, id: create_fragment.name });`}

src/runtime/internal/Component.ts

@@ -98,7 +98,7 @@ function make_dirty(component, i) {
 }
 
 
-export function addCssToComponent(component, add_css, options) {
+export function add_css_to_component(component, add_css, options) {
 	component.$$ = {
 		customStyleTag: options.customStyleTag || current_component && current_component.$$.customStyleTag
 	};

src/runtime/internal/dom.ts

@@ -1,6 +1,6 @@
 import { has_prop } from './utils';
 
-export function appendStyleIfNotPresent(
+export function append_style_if_not_present(
 	target: Element,
 	styleSheetId: string,
 	styles: string,

test/js/samples/collapses-text-around-comments/expected.js

@@ -1,9 +1,9 @@
 /* generated by Svelte vX.Y.Z */
 import {
 	SvelteComponent,
-	addCssToComponent,
+	add_css_to_component,
 	append,
-	appendStyleIfNotPresent,
+	append_style_if_not_present,
 	attr,
 	detach,
 	element,
@@ -15,8 +15,8 @@ import {
 	text
 } from "svelte/internal";
 
-function add_css(customStyleTag) {
-	appendStyleIfNotPresent(customStyleTag, "1a7i8ec", "p.svelte-1a7i8ec{color:red}");
+function add_css(target) {
+	append_style_if_not_present(target, "1a7i8ec", "p.svelte-1a7i8ec{color:red}");
 }
 
 function create_fragment(ctx) {
@@ -57,7 +57,7 @@ function instance($$self, $$props, $$invalidate) {
 class Component extends SvelteComponent {
 	constructor(options) {
 		super();
-		addCssToComponent(this, add_css, options);
+		add_css_to_component(this, add_css, options);
 		init(this, options, instance, create_fragment, safe_not_equal, { foo: 0 });
 	}
 }

test/js/samples/css-media-query/expected.js

@@ -1,8 +1,8 @@
 /* generated by Svelte vX.Y.Z */
 import {
 	SvelteComponent,
-	addCssToComponent,
-	appendStyleIfNotPresent,
+	add_css_to_component,
+	append_style_if_not_present,
 	attr,
 	detach,
 	element,
@@ -12,8 +12,8 @@ import {
 	safe_not_equal
 } from "svelte/internal";
 
-function add_css(customStyleTag) {
-	appendStyleIfNotPresent(customStyleTag, "1slhpfn", "@media(min-width: 1px){div.svelte-1slhpfn{color:red}}");
+function add_css(target) {
+	append_style_if_not_present(target, "1slhpfn", "@media(min-width: 1px){div.svelte-1slhpfn{color:red}}");
 }
 
 function create_fragment(ctx) {
@@ -39,7 +39,7 @@ function create_fragment(ctx) {
 class Component extends SvelteComponent {
 	constructor(options) {
 		super();
-		addCssToComponent(this, add_css, options);
+		add_css_to_component(this, add_css, options);
 		init(this, options, null, create_fragment, safe_not_equal, {});
 	}
 }