(fix) better backwards compatibility

packages/language-server/test/plugins/typescript/features/diagnostics/fixtures/custom-types/expected.json

@@ -0,0 +1,112 @@
+[
+    {
+        "range": {
+            "start": { "line": 12, "character": 19 },
+            "end": { "line": 12, "character": 20 }
+        },
+        "severity": 4,
+        "source": "ts",
+        "message": "Parameter 'e' implicitly has an 'any' type, but a better type may be inferred from usage.",
+        "code": 7044,
+        "tags": []
+    },
+    {
+        "range": {
+            "start": { "line": 21, "character": 19 },
+            "end": { "line": 21, "character": 20 }
+        },
+        "severity": 4,
+        "source": "ts",
+        "message": "Parameter 'e' implicitly has an 'any' type, but a better type may be inferred from usage.",
+        "code": 7044,
+        "tags": []
+    },
+    {
+        "range": {
+            "start": { "line": 11, "character": 5 },
+            "end": { "line": 11, "character": 12 }
+        },
+        "severity": 1,
+        "source": "ts",
+        "message": "Type '{ owntype: string; }' is not assignable to type 'HTMLProps<HTMLDivElement>'.\n  Property 'owntype' does not exist on type 'HTMLProps<HTMLDivElement>'.",
+        "code": 2322,
+        "tags": []
+    },
+    {
+        "range": {
+            "start": { "line": 12, "character": 5 },
+            "end": { "line": 12, "character": 16 }
+        },
+        "severity": 1,
+        "source": "ts",
+        "message": "Type '{ onownclick: (e: any) => any; }' is not assignable to type 'HTMLProps<HTMLDivElement>'.\n  Property 'onownclick' does not exist on type 'HTMLProps<HTMLDivElement>'. Did you mean 'onclick'?",
+        "code": 2322,
+        "tags": []
+    },
+    {
+        "range": {
+            "start": { "line": 19, "character": 5 },
+            "end": { "line": 19, "character": 12 }
+        },
+        "severity": 1,
+        "source": "ts",
+        "message": "Type '{ owntype: boolean; }' is not assignable to type 'HTMLProps<HTMLDivElement>'.\n  Property 'owntype' does not exist on type 'HTMLProps<HTMLDivElement>'.",
+        "code": 2322,
+        "tags": []
+    },
+    {
+        "range": {
+            "start": { "line": 20, "character": 5 },
+            "end": { "line": 20, "character": 19 }
+        },
+        "severity": 1,
+        "source": "ts",
+        "message": "Type 'boolean' is not assignable to type 'string'.",
+        "code": 2322,
+        "tags": []
+    },
+    {
+        "range": {
+            "start": { "line": 21, "character": 5 },
+            "end": { "line": 21, "character": 16 }
+        },
+        "severity": 1,
+        "source": "ts",
+        "message": "Type '{ onownclick: (e: any) => any; }' is not assignable to type 'HTMLProps<HTMLDivElement>'.\n  Property 'onownclick' does not exist on type 'HTMLProps<HTMLDivElement>'. Did you mean 'onclick'?",
+        "code": 2322,
+        "tags": []
+    },
+    {
+        "range": {
+            "start": { "line": 22, "character": 41 },
+            "end": { "line": 22, "character": 46 }
+        },
+        "severity": 1,
+        "source": "ts",
+        "message": "Property 'wrong' does not exist on type '{ foo: string; }'.",
+        "code": 2339,
+        "tags": []
+    },
+    {
+        "range": {
+            "start": { "line": 24, "character": 22 },
+            "end": { "line": 24, "character": 31 }
+        },
+        "severity": 1,
+        "source": "ts",
+        "message": "Type 'boolean' is not assignable to type 'string'.",
+        "code": 2322,
+        "tags": []
+    },
+    {
+        "range": {
+            "start": { "line": 25, "character": 22 },
+            "end": { "line": 25, "character": 32 }
+        },
+        "severity": 1,
+        "source": "ts",
+        "message": "Type '{ doesnexist: string; }' is not assignable to type '{ attribute?: string; }'.\n  Property 'doesnexist' does not exist on type '{ attribute?: string; }'.",
+        "code": 2322,
+        "tags": []
+    }
+]

packages/language-server/test/plugins/typescript/features/diagnostics/fixtures/custom-types/expectedv2.json

@@ -0,0 +1,90 @@
+[
+    {
+        "range": {
+            "start": { "line": 15, "character": 13 },
+            "end": { "line": 15, "character": 22 }
+        },
+        "severity": 1,
+        "source": "ts",
+        "message": "Type 'boolean' is not assignable to type 'string'.",
+        "code": 2322,
+        "tags": []
+    },
+    {
+        "range": {
+            "start": { "line": 16, "character": 13 },
+            "end": { "line": 16, "character": 30 }
+        },
+        "severity": 1,
+        "source": "ts",
+        "message": "Argument of type '{ doesnexist: string; }' is not assignable to parameter of type '{ attribute?: string; }'.\n  Object literal may only specify known properties, and '\"doesnexist\"' does not exist in type '{ attribute?: string; }'.",
+        "code": 2345,
+        "tags": []
+    },
+    {
+        "range": {
+            "start": { "line": 19, "character": 5 },
+            "end": { "line": 19, "character": 12 }
+        },
+        "severity": 1,
+        "source": "ts",
+        "message": "Type 'boolean' is not assignable to type 'string'.",
+        "code": 2322,
+        "tags": []
+    },
+    {
+        "range": {
+            "start": { "line": 20, "character": 5 },
+            "end": { "line": 20, "character": 19 }
+        },
+        "severity": 1,
+        "source": "ts",
+        "message": "Type 'boolean' is not assignable to type 'string'.",
+        "code": 2322,
+        "tags": []
+    },
+    {
+        "range": {
+            "start": { "line": 21, "character": 34 },
+            "end": { "line": 21, "character": 39 }
+        },
+        "severity": 1,
+        "source": "ts",
+        "message": "Property 'wrong' does not exist on type '{ foo: string; }'.",
+        "code": 2339,
+        "tags": []
+    },
+    {
+        "range": {
+            "start": { "line": 22, "character": 41 },
+            "end": { "line": 22, "character": 46 }
+        },
+        "severity": 1,
+        "source": "ts",
+        "message": "Property 'wrong' does not exist on type '{ foo: string; }'.",
+        "code": 2339,
+        "tags": []
+    },
+    {
+        "range": {
+            "start": { "line": 24, "character": 22 },
+            "end": { "line": 24, "character": 31 }
+        },
+        "severity": 1,
+        "source": "ts",
+        "message": "Type 'boolean' is not assignable to type 'string'.",
+        "code": 2322,
+        "tags": []
+    },
+    {
+        "range": {
+            "start": { "line": 25, "character": 22 },
+            "end": { "line": 25, "character": 39 }
+        },
+        "severity": 1,
+        "source": "ts",
+        "message": "Argument of type '{ doesnexist: string; }' is not assignable to parameter of type '{ attribute?: string; }'.\n  Object literal may only specify known properties, and '\"doesnexist\"' does not exist in type '{ attribute?: string; }'.",
+        "code": 2345,
+        "tags": []
+    }
+]

packages/language-server/test/plugins/typescript/features/diagnostics/fixtures/custom-types/input.svelte

@@ -0,0 +1,26 @@
+<script lang="ts"></script>
+
+<!-- valid for both -->
+<div owntypefromold="foo" />
+<div on:ownclickfromold={(e) => e.detail.foo} />
+
+<own-element attribute="foo" />
+
+<own-element-from-old attribute="foo" />
+
+<!-- valid for new, invalid for old -->
+<div owntype="foo" />
+<div on:ownclick={(e) => e.detail.foo} />
+
+<!-- valid for old, invalid for new -->
+<own-element attribute={false} />
+<own-element doesnexist="wrong" />
+
+<!-- invalid -->
+<div owntype={false} />
+<div owntypefromold={false} />
+<div on:ownclick={(e) => e.detail.wrong} />
+<div on:ownclickfromold={(e) => e.detail.wrong} />
+
+<own-element-from-old attribute={false} />
+<own-element-from-old doesnexist="wrong" />

packages/language-server/test/plugins/typescript/features/diagnostics/fixtures/custom-types/svelte-ambient-typings.d.ts

@@ -0,0 +1,24 @@
+/* eslint-disable */
+declare namespace svelte.JSX {
+    interface HTMLAttributes {
+        owntypefromold?: string;
+        onownclickfromold?: (event: CustomEvent<{ foo: string }>) => void;
+    }
+    interface IntrinsicElements {
+        'own-element-from-old': {
+            attribute?: string;
+        };
+    }
+}
+
+declare namespace svelteHTML {
+    interface HTMLAttributes {
+        owntype?: string;
+        'on:ownclick'?: (event: CustomEvent<{ foo: string }>) => void;
+    }
+    interface IntrinsicElements {
+        'own-element': {
+            attribute?: string;
+        };
+    }
+}

packages/language-server/test/plugins/typescript/features/diagnostics/fixtures/custom-types/tsconfig.json

@@ -0,0 +1,9 @@
+{
+    "compilerOptions": {
+        /**
+          This is actually not needed, but makes the tests faster
+          because TS does not look up other types.
+        */
+        "types": ["svelte"]
+    }
+}

packages/language-server/test/plugins/typescript/features/diagnostics/fixtures/element-attributes/expectedv2.json

@@ -3,15 +3,15 @@
         "range": { "start": { "line": 9, "character": 5 }, "end": { "line": 9, "character": 19 } },
         "severity": 1,
         "source": "ts",
-        "message": "Argument of type '{ \"this-is\": string; }' is not assignable to parameter of type 'HTMLAttributes<...> & EventsWithColon<HTMLProps<HTMLDivElement>> & svelteHTML.HTMLAttributes<...>'.\n  Object literal may only specify known properties, and '\"this-is\"' does not exist in type 'HTMLAttributes<...> & EventsWithColon<HTMLProps<HTMLDivElement>> & svelteHTML.HTMLAttributes<...>'.",
+        "message": "Argument of type '{ \"this-is\": string; }' is not assignable to parameter of type 'HTMLProps<\"div\", HTMLAttributes<any>>'.\n  Object literal may only specify known properties, and '\"this-is\"' does not exist in type 'HTMLProps<\"div\", HTMLAttributes<any>>'.",
         "code": 2345,
         "tags": []
     },
     {
         "range": { "start": { "line": 10, "character": 6 }, "end": { "line": 10, "character": 9 } },
         "severity": 1,
         "source": "ts",
-        "message": "Argument of type '{ bar: string; }' is not assignable to parameter of type 'HTMLAttributes<...> & EventsWithColon<HTMLProps<HTMLDivElement>> & svelteHTML.HTMLAttributes<...>'.\n  Object literal may only specify known properties, and 'bar' does not exist in type 'HTMLAttributes<...> & EventsWithColon<HTMLProps<HTMLDivElement>> & svelteHTML.HTMLAttributes<...>'.",
+        "message": "Argument of type '{ bar: string; }' is not assignable to parameter of type 'HTMLProps<\"div\", HTMLAttributes<any>>'.\n  Object literal may only specify known properties, and 'bar' does not exist in type 'HTMLProps<\"div\", HTMLAttributes<any>>'.",
         "code": 2345,
         "tags": []
     }