diff --git a/site/content/docs/04-compile-time.md b/site/content/docs/04-compile-time.md
index 9fa0f92195..ccd37e5426 100644
--- a/site/content/docs/04-compile-time.md
+++ b/site/content/docs/04-compile-time.md
@@ -48,7 +48,6 @@ The following options can be passed to the compiler. None are required:
| `dev` | boolean | `false`
| `immutable` | boolean | `false`
| `hydratable` | boolean | `false`
-| `legacy` | boolean | `false`
| `customElement` | boolean | `false`
| `tag` | string | null
| `accessors` | boolean | `false`
@@ -69,7 +68,6 @@ The following options can be passed to the compiler. None are required:
| `dev` | `false` | If `true`, causes extra code to be added to components that will perform runtime checks and provide debugging information during development.
| `immutable` | `false` | If `true`, tells the compiler that you promise not to mutate any objects. This allows it to be less conservative about checking whether values have changed.
| `hydratable` | `false` | If `true` when generating DOM code, enables the `hydrate: true` runtime option, which allows a component to upgrade existing DOM rather than creating new DOM from scratch. When generating SSR code, this adds markers to `` elements so that hydration knows which to replace.
-| `legacy` | `false` | If `true`, generates code that will work in IE9 and IE10, which don't support things like `element.dataset`.
| `accessors` | `false` | If `true`, getters and setters will be created for the component's props. If `false`, they will only be created for readonly exported values (i.e. those declared with `const`, `class` and `function`). If compiling with `customElement: true` this option defaults to `true`.
| `customElement` | `false` | If `true`, tells the compiler to generate a custom element constructor instead of a regular Svelte component.
| `tag` | `null` | A `string` that tells Svelte what tag name to register the custom element with. It must be a lowercase alphanumeric string with at least one hyphen, e.g. `"my-element"`.
diff --git a/src/compiler/compile/index.ts b/src/compiler/compile/index.ts
index 12b161aeeb..cb8ed1ad81 100644
--- a/src/compiler/compile/index.ts
+++ b/src/compiler/compile/index.ts
@@ -20,7 +20,6 @@ const valid_options = [
'accessors',
'immutable',
'hydratable',
- 'legacy',
'customElement',
'tag',
'css',
diff --git a/src/compiler/compile/nodes/Element.ts b/src/compiler/compile/nodes/Element.ts
index 517ed3ceb6..9bbee442bd 100644
--- a/src/compiler/compile/nodes/Element.ts
+++ b/src/compiler/compile/nodes/Element.ts
@@ -750,14 +750,6 @@ export default class Element extends Node {
}
}
- if (component.compile_options.legacy && (modifier === 'once' || modifier === 'passive')) {
- // TODO this could be supported, but it would need a few changes to
- // how event listeners work
- component.error(handler, {
- code: 'invalid-event-modifier',
- message: `The '${modifier}' modifier cannot be used in legacy mode`
- });
- }
});
if (passive_events.has(handler.name) && handler.can_make_passive && !handler.modifiers.has('preventDefault')) {
diff --git a/src/compiler/compile/render_dom/wrappers/Element/Attribute.ts b/src/compiler/compile/render_dom/wrappers/Element/Attribute.ts
index ca941b7be9..d156820e26 100644
--- a/src/compiler/compile/render_dom/wrappers/Element/Attribute.ts
+++ b/src/compiler/compile/render_dom/wrappers/Element/Attribute.ts
@@ -72,8 +72,6 @@ export default class AttributeWrapper {
? '@xlink_attr'
: '@attr';
- const is_legacy_input_type = element.renderer.component.compile_options.legacy && name === 'type' && this.parent.node.name === 'input';
-
const dependencies = this.node.get_dependencies();
const value = this.get_value(block);
@@ -94,12 +92,7 @@ export default class AttributeWrapper {
let updater;
const init = should_cache ? x`${last} = ${value}` : value;
- if (is_legacy_input_type) {
- block.chunks.hydrate.push(
- b`@set_input_type(${element.var}, ${init});`
- );
- updater = b`@set_input_type(${element.var}, ${should_cache ? last : value});`;
- } else if (is_select_value_attribute) {
+ if (is_select_value_attribute) {
// annoying special case
const is_multiple_select = element.node.get_static_attribute_value('multiple');
diff --git a/src/compiler/interfaces.ts b/src/compiler/interfaces.ts
index a5e286462f..9a7a54347b 100644
--- a/src/compiler/interfaces.ts
+++ b/src/compiler/interfaces.ts
@@ -118,7 +118,6 @@ export interface CompileOptions {
accessors?: boolean;
immutable?: boolean;
hydratable?: boolean;
- legacy?: boolean;
customElement?: boolean;
tag?: string;
css?: boolean;
diff --git a/test/js/samples/legacy-input-type/_config.js b/test/js/samples/legacy-input-type/_config.js
deleted file mode 100644
index b5141be9ab..0000000000
--- a/test/js/samples/legacy-input-type/_config.js
+++ /dev/null
@@ -1,5 +0,0 @@
-export default {
- options: {
- legacy: true
- }
-};
\ No newline at end of file
diff --git a/test/js/samples/legacy-input-type/expected.js b/test/js/samples/legacy-input-type/expected.js
deleted file mode 100644
index 2b76a48522..0000000000
--- a/test/js/samples/legacy-input-type/expected.js
+++ /dev/null
@@ -1,40 +0,0 @@
-/* generated by Svelte vX.Y.Z */
-import {
- SvelteComponent,
- detach,
- element,
- init,
- insert,
- noop,
- safe_not_equal,
- set_input_type
-} from "svelte/internal";
-
-function create_fragment(ctx) {
- let input;
-
- return {
- c() {
- input = element("input");
- set_input_type(input, "search");
- },
- m(target, anchor) {
- insert(target, input, anchor);
- },
- p: noop,
- i: noop,
- o: noop,
- d(detaching) {
- if (detaching) detach(input);
- }
- };
-}
-
-class Component extends SvelteComponent {
- constructor(options) {
- super();
- init(this, options, null, create_fragment, safe_not_equal, {});
- }
-}
-
-export default Component;
\ No newline at end of file
diff --git a/test/js/samples/legacy-input-type/input.svelte b/test/js/samples/legacy-input-type/input.svelte
deleted file mode 100644
index 564f14428c..0000000000
--- a/test/js/samples/legacy-input-type/input.svelte
+++ /dev/null
@@ -1 +0,0 @@
-
\ No newline at end of file
diff --git a/test/validator/index.js b/test/validator/index.js
index 9bce5e149b..a60613e042 100644
--- a/test/validator/index.js
+++ b/test/validator/index.js
@@ -27,7 +27,6 @@ describe("validate", () => {
try {
const { warnings } = svelte.compile(input, {
dev: config.dev,
- legacy: config.legacy,
generate: false,
customElement: config.customElement,
...options,
diff --git a/test/validator/samples/event-modifiers-legacy/_config.js b/test/validator/samples/event-modifiers-legacy/_config.js
deleted file mode 100644
index 0179e05ec4..0000000000
--- a/test/validator/samples/event-modifiers-legacy/_config.js
+++ /dev/null
@@ -1,3 +0,0 @@
-export default {
- legacy: true
-};
\ No newline at end of file
diff --git a/test/validator/samples/event-modifiers-legacy/errors.json b/test/validator/samples/event-modifiers-legacy/errors.json
deleted file mode 100644
index 2e340b7b2f..0000000000
--- a/test/validator/samples/event-modifiers-legacy/errors.json
+++ /dev/null
@@ -1,15 +0,0 @@
-[{
- "message": "The 'once' modifier cannot be used in legacy mode",
- "code": "invalid-event-modifier",
- "start": {
- "line": 1,
- "column": 8,
- "character": 8
- },
- "end": {
- "line": 1,
- "column": 37,
- "character": 37
- },
- "pos": 8
-}]
diff --git a/test/validator/samples/event-modifiers-legacy/input.svelte b/test/validator/samples/event-modifiers-legacy/input.svelte
deleted file mode 100644
index c53a616fb5..0000000000
--- a/test/validator/samples/event-modifiers-legacy/input.svelte
+++ /dev/null
@@ -1 +0,0 @@
-
\ No newline at end of file