(feat): improved mobile notifications

(feat): add lint rules
(feat): improve markdown inline code box

utils/eslint-rules/index.ts

@@ -72,3 +72,211 @@ export const noWindowLocationReload: Rule.RuleModule = {
     };
   },
 };
+
+interface AstNode {
+  type: string;
+  parent: AstNode | null;
+  range: [number, number];
+}
+
+interface TypeAliasDeclaration extends AstNode {
+  type: "TSTypeAliasDeclaration";
+  typeAnnotation: AstNode;
+  typeParameters?: unknown;
+}
+
+interface FunctionDeclaration extends AstNode {
+  type: "FunctionDeclaration";
+  async: boolean;
+  generator: boolean;
+  params: AstNode[];
+  body: AstNode & { body: AstNode[] };
+}
+
+interface ReturnStatement extends AstNode {
+  type: "ReturnStatement";
+  argument: AstNode | null;
+}
+
+function isExported(node: AstNode): boolean {
+  return (
+    node.parent?.type === "ExportNamedDeclaration" ||
+    node.parent?.type === "ExportDefaultDeclaration"
+  );
+}
+
+function containsContextSensitiveNode(value: unknown): boolean {
+  if (!value || typeof value !== "object") return false;
+
+  const node = value as { type?: string; [key: string]: unknown };
+  if (
+    node.type === "ThisExpression" ||
+    node.type === "Super" ||
+    node.type === "MetaProperty"
+  ) {
+    return true;
+  }
+
+  return Object.entries(node).some(
+    ([key, child]) =>
+      key !== "parent" &&
+      key !== "loc" &&
+      key !== "range" &&
+      containsContextSensitiveNode(child),
+  );
+}
+
+const unambiguousInlineTypes = new Set([
+  "TSAnyKeyword",
+  "TSBigIntKeyword",
+  "TSBooleanKeyword",
+  "TSIntrinsicKeyword",
+  "TSLiteralType",
+  "TSNeverKeyword",
+  "TSNullKeyword",
+  "TSNumberKeyword",
+  "TSObjectKeyword",
+  "TSStringKeyword",
+  "TSSymbolKeyword",
+  "TSThisType",
+  "TSTupleType",
+  "TSTypeLiteral",
+  "TSTypeReference",
+  "TSUndefinedKeyword",
+  "TSUnknownKeyword",
+  "TSVoidKeyword",
+]);
+
+export const inlineSingleUseDeclarations: Rule.RuleModule = {
+  meta: {
+    type: "suggestion",
+    docs: {
+      description: "Inline local types and functions that are used only once",
+    },
+    fixable: "code",
+    messages: {
+      function: "Inline this function at its only call site.",
+      type: "Inline this type at its only use site.",
+    },
+    schema: [],
+  },
+  create(context) {
+    const sourceCode = context.sourceCode;
+
+    return {
+      TSTypeAliasDeclaration(untypedNode: Rule.Node) {
+        const node = untypedNode as unknown as TypeAliasDeclaration;
+        if (node.typeParameters || isExported(node)) return;
+
+        const eslintNode = node as unknown as Rule.Node;
+        const [variable] = sourceCode.getDeclaredVariables(eslintNode);
+        if (!variable || variable.references.length !== 1) return;
+
+        const reference = variable.references[0]
+          .identifier as unknown as AstNode;
+        if (
+          reference.range[0] >= node.range[0] &&
+          reference.range[1] <= node.range[1]
+        ) {
+          return;
+        }
+
+        const referenceParent = reference.parent;
+        if (
+          !referenceParent ||
+          referenceParent.type !== "TSTypeReference" ||
+          referenceParent.parent?.type === "TSClassImplements" ||
+          referenceParent.parent?.type === "TSInterfaceHeritage"
+        ) {
+          return;
+        }
+
+        context.report({
+          node: eslintNode,
+          messageId: "type",
+          fix(fixer) {
+            const annotation = sourceCode.getText(
+              node.typeAnnotation as unknown as Rule.Node,
+            );
+            const replacement = unambiguousInlineTypes.has(
+              node.typeAnnotation.type,
+            )
+              ? annotation
+              : `(${annotation})`;
+
+            return [
+              fixer.replaceText(
+                referenceParent as unknown as Rule.Node,
+                replacement,
+              ),
+              fixer.remove(eslintNode),
+            ];
+          },
+        });
+      },
+
+      FunctionDeclaration(untypedNode: Rule.Node) {
+        const node = untypedNode as unknown as FunctionDeclaration;
+        if (
+          node.async ||
+          node.generator ||
+          node.params.length !== 0 ||
+          node.body.body.length !== 1 ||
+          isExported(node)
+        ) {
+          return;
+        }
+
+        const statement = node.body.body[0] as ReturnStatement;
+        if (statement.type !== "ReturnStatement" || !statement.argument) return;
+
+        const eslintNode = node as unknown as Rule.Node;
+        const functionScope = sourceCode.getScope(eslintNode);
+        if (
+          functionScope.references.length !== 0 ||
+          functionScope.through.length !== 0 ||
+          containsContextSensitiveNode(statement.argument)
+        ) {
+          return;
+        }
+
+        const [variable] = sourceCode.getDeclaredVariables(eslintNode);
+        if (!variable || variable.references.length !== 1) return;
+
+        const reference = variable.references[0]
+          .identifier as unknown as AstNode;
+        const call = reference.parent;
+        if (
+          !call ||
+          call.type !== "CallExpression" ||
+          (call as AstNode & { callee: AstNode }).callee !== reference ||
+          (call as AstNode & { arguments: AstNode[] }).arguments.length !== 0 ||
+          (call as AstNode & { optional?: boolean }).optional ||
+          (reference.range[0] >= node.range[0] &&
+            reference.range[1] <= node.range[1])
+        ) {
+          return;
+        }
+
+        context.report({
+          node: eslintNode,
+          messageId: "function",
+          fix(fixer) {
+            const expression = sourceCode.getText(
+              statement.argument! as unknown as Rule.Node,
+            );
+            const replacement =
+              statement.argument!.type === "Literal"
+                ? expression
+                : `(${expression})`;
+
+            return [
+              fixer.replaceText(call as unknown as Rule.Node, replacement),
+              fixer.remove(eslintNode),
+            ];
+          },
+        });
+      },
+    };
+  },
+};