fix: fall back to any instead of unknown for untyped $props (#2582

) The idea was to be conservative about it, but this causes problems for people not wanting strict type checking but only a basic form of it. Falling back to `any` is the more pragmatic choice #2556
sveltejs · Nov 12, 2024 · 77160ff · 77160ff
1 parent 437b0e1
commit 77160ff
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Showing 6 changed files with 13 additions and 14 deletions.
diff --git a/packages/svelte2tsx/src/svelte2tsx/nodes/ExportedNames.ts b/packages/svelte2tsx/src/svelte2tsx/nodes/ExportedNames.ts
@@ -284,7 +284,7 @@ export class ExportedNames {
                                     ? element.initializer.arguments[0]
                                     : element.initializer;
                             const type = !initializer
-                                ? 'unknown'
+                                ? 'any'
                                 : ts.isAsExpression(initializer)
                                   ? initializer.type.getText()
                                   : ts.isStringLiteral(initializer)
@@ -300,13 +300,13 @@ export class ExportedNames {
                                           : ts.isArrowFunction(initializer)
                                             ? 'Function'
                                             : ts.isObjectLiteralExpression(initializer)
-                                              ? 'Record<string, unknown>'
+                                              ? 'Record<string, any>'
                                               : ts.isArrayLiteralExpression(initializer)
-                                                ? 'unknown[]'
-                                                : 'unknown';
+                                                ? 'any[]'
+                                                : 'any';
                             props.push(`${name}?: ${type}`);
                         } else {
-                            props.push(`${name}: unknown`);
+                            props.push(`${name}: any`);
                         }
                     }
                 }
@@ -317,15 +317,14 @@ export class ExportedNames {
 
                 if (props.length > 0) {
                     propsStr =
-                        `{ ${props.join(', ')} }` +
-                        (withUnknown ? ' & Record<string, unknown>' : '');
+                        `{ ${props.join(', ')} }` + (withUnknown ? ' & Record<string, any>' : '');
                 } else if (withUnknown) {
-                    propsStr = 'Record<string, unknown>';
+                    propsStr = 'Record<string, any>';
                 } else {
                     propsStr = 'Record<string, never>';
                 }
             } else {
-                propsStr = 'Record<string, unknown>';
+                propsStr = 'Record<string, any>';
             }
 
             // Create a virtual type alias for the unnamed generic and reuse it for the props return type

diff --git a/packages/svelte2tsx/test/svelte2tsx/samples/runes-best-effort-types.v5/expectedv2.ts b/packages/svelte2tsx/test/svelte2tsx/samples/runes-best-effort-types.v5/expectedv2.ts
@@ -1,7 +1,7 @@
 ///<reference types="svelte" />
 ;function render() {
 
-    let/** @typedef {{ a: unknown, b?: boolean, c?: number, d?: string, e?: unknown, f?: Record<string, unknown>, g?: typeof foo, h?: unknown[], i?: unknown, j?: unknown, k?: number, l?: Function }} $$ComponentProps *//** @type {$$ComponentProps} */ { a, b = true, c = 1, d = '', e = null, f = {}, g = foo, h = [], i = undefined, j = $bindable(), k = $bindable(1), l = () => {} } = $props(); 
+    let/** @typedef {{ a: any, b?: boolean, c?: number, d?: string, e?: any, f?: Record<string, any>, g?: typeof foo, h?: any[], i?: any, j?: any, k?: number, l?: Function }} $$ComponentProps *//** @type {$$ComponentProps} */ { a, b = true, c = 1, d = '', e = null, f = {}, g = foo, h = [], i = undefined, j = $bindable(), k = $bindable(1), l = () => {} } = $props(); 
 ;
 async () => {};
 return { props: /** @type {$$ComponentProps} */({}), exports: {}, bindings: __sveltets_$$bindings('j', 'k'), slots: {}, events: {} }}

diff --git a/packages/svelte2tsx/test/svelte2tsx/samples/runes-bindable.v5/expectedv2.ts b/packages/svelte2tsx/test/svelte2tsx/samples/runes-bindable.v5/expectedv2.ts
@@ -1,7 +1,7 @@
 ///<reference types="svelte" />
 ;function render() {
 
-    let/** @typedef {{ a: unknown, b?: unknown }} $$ComponentProps *//** @type {$$ComponentProps} */ { a, b = $bindable() } = $props();
+    let/** @typedef {{ a: any, b?: any }} $$ComponentProps *//** @type {$$ComponentProps} */ { a, b = $bindable() } = $props();
 ;
 async () => {};
 return { props: /** @type {$$ComponentProps} */({}), exports: {}, bindings: __sveltets_$$bindings('b'), slots: {}, events: {} }}

diff --git a/packages/svelte2tsx/test/svelte2tsx/samples/runes-looking-like-stores.v5/expectedv2.ts b/packages/svelte2tsx/test/svelte2tsx/samples/runes-looking-like-stores.v5/expectedv2.ts
@@ -1,7 +1,7 @@
 ///<reference types="svelte" />
 ;function render() {
 
-    let/** @typedef {{ props: unknown }} $$ComponentProps *//** @type {$$ComponentProps} */ { props } = $props();
+    let/** @typedef {{ props: any }} $$ComponentProps *//** @type {$$ComponentProps} */ { props } = $props();
     let state = $state(0);
     let derived = $derived(state * 2);
 ;

diff --git a/packages/svelte2tsx/test/svelte2tsx/samples/ts-runes-best-effort-types.v5/expectedv2.ts b/packages/svelte2tsx/test/svelte2tsx/samples/ts-runes-best-effort-types.v5/expectedv2.ts
@@ -1,6 +1,6 @@
 ///<reference types="svelte" />
 ;function render() {
-/*Ωignore_startΩ*/;type $$ComponentProps = { a: unknown, b?: boolean, c?: number, d?: string, e?: unknown, f?: Record<string, unknown>, g?: typeof foo, h?: Bar, i?: Baz, j?: unknown[], k?: unknown, l?: unknown, m?: number, n?: Function };/*Ωignore_endΩ*/
+/*Ωignore_startΩ*/;type $$ComponentProps = { a: any, b?: boolean, c?: number, d?: string, e?: any, f?: Record<string, any>, g?: typeof foo, h?: Bar, i?: Baz, j?: any[], k?: any, l?: any, m?: number, n?: Function };/*Ωignore_endΩ*/
     let { a, b = true, c = 1, d = '', e = null, f = {}, g = foo, h = null as Bar, i = null as any as Baz, j = [], k = undefined, l = $bindable(), m = $bindable(1), n = () => {} }: $$ComponentProps = $props(); 
 ;
 async () => {};

diff --git a/packages/svelte2tsx/test/svelte2tsx/samples/ts-runes-bindable.v5/expectedv2.ts b/packages/svelte2tsx/test/svelte2tsx/samples/ts-runes-bindable.v5/expectedv2.ts
@@ -1,6 +1,6 @@
 ///<reference types="svelte" />
 ;function render() {
-/*Ωignore_startΩ*/;type $$ComponentProps = { a: unknown, b?: unknown, c?: number };/*Ωignore_endΩ*/
+/*Ωignore_startΩ*/;type $$ComponentProps = { a: any, b?: any, c?: number };/*Ωignore_endΩ*/
     let { a, b = $bindable(), c = $bindable(0) as number }: $$ComponentProps = $props();
 ;
 async () => {};