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node_modules/lit-html/directives/class-map.d.ts

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+/**
+ * @license
+ * Copyright 2018 Google LLC
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+import { AttributePart, noChange } from '../lit-html.js';
+import { Directive, DirectiveParameters, PartInfo } from '../directive.js';
+/**
+ * A key-value set of class names to truthy values.
+ */
+export interface ClassInfo {
+    readonly [name: string]: string | boolean | number;
+}
+declare class ClassMapDirective extends Directive {
+    /**
+     * Stores the ClassInfo object applied to a given AttributePart.
+     * Used to unset existing values when a new ClassInfo object is applied.
+     */
+    private _previousClasses?;
+    private _staticClasses?;
+    constructor(partInfo: PartInfo);
+    render(classInfo: ClassInfo): string;
+    update(part: AttributePart, [classInfo]: DirectiveParameters<this>): string | typeof noChange;
+}
+/**
+ * A directive that applies dynamic CSS classes.
+ *
+ * This must be used in the `class` attribute and must be the only part used in
+ * the attribute. It takes each property in the `classInfo` argument and adds
+ * the property name to the element's `classList` if the property value is
+ * truthy; if the property value is falsey, the property name is removed from
+ * the element's `class`.
+ *
+ * For example `{foo: bar}` applies the class `foo` if the value of `bar` is
+ * truthy.
+ *
+ * @param classInfo
+ */
+export declare const classMap: (classInfo: ClassInfo) => import("../directive.js").DirectiveResult<typeof ClassMapDirective>;
+/**
+ * The type of the class that powers this directive. Necessary for naming the
+ * directive's return type.
+ */
+export type { ClassMapDirective };
+//# sourceMappingURL=class-map.d.ts.map