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node_modules/lit-html/node/development/static.js

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+import { html as html$1, svg as svg$1 } from './lit-html.js';
+
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+/**
+ * Prevents JSON injection attacks.
+ *
+ * The goals of this brand:
+ *   1) fast to check
+ *   2) code is small on the wire
+ *   3) multiple versions of Lit in a single page will all produce mutually
+ *      interoperable StaticValues
+ *   4) normal JSON.parse (without an unusual reviver) can not produce a
+ *      StaticValue
+ *
+ * Symbols satisfy (1), (2), and (4). We use Symbol.for to satisfy (3), but
+ * we don't care about the key, so we break ties via (2) and use the empty
+ * string.
+ */
+const brand = Symbol.for('');
+/** Safely extracts the string part of a StaticValue. */
+const unwrapStaticValue = (value) => {
+    if ((value === null || value === void 0 ? void 0 : value.r) !== brand) {
+        return undefined;
+    }
+    return value === null || value === void 0 ? void 0 : value['_$litStatic$'];
+};
+/**
+ * Wraps a string so that it behaves like part of the static template
+ * strings instead of a dynamic value.
+ *
+ * Users must take care to ensure that adding the static string to the template
+ * results in well-formed HTML, or else templates may break unexpectedly.
+ *
+ * Note that this function is unsafe to use on untrusted content, as it will be
+ * directly parsed into HTML. Do not pass user input to this function
+ * without sanitizing it.
+ *
+ * Static values can be changed, but they will cause a complete re-render
+ * since they effectively create a new template.
+ */
+const unsafeStatic = (value) => ({
+    ['_$litStatic$']: value,
+    r: brand,
+});
+const textFromStatic = (value) => {
+    if (value['_$litStatic$'] !== undefined) {
+        return value['_$litStatic$'];
+    }
+    else {
+        throw new Error(`Value passed to 'literal' function must be a 'literal' result: ${value}. Use 'unsafeStatic' to pass non-literal values, but
+            take care to ensure page security.`);
+    }
+};
+/**
+ * Tags a string literal so that it behaves like part of the static template
+ * strings instead of a dynamic value.
+ *
+ * The only values that may be used in template expressions are other tagged
+ * `literal` results or `unsafeStatic` values (note that untrusted content
+ * should never be passed to `unsafeStatic`).
+ *
+ * Users must take care to ensure that adding the static string to the template
+ * results in well-formed HTML, or else templates may break unexpectedly.
+ *
+ * Static values can be changed, but they will cause a complete re-render since
+ * they effectively create a new template.
+ */
+const literal = (strings, ...values) => ({
+    ['_$litStatic$']: values.reduce((acc, v, idx) => acc + textFromStatic(v) + strings[idx + 1], strings[0]),
+    r: brand,
+});
+const stringsCache = new Map();
+/**
+ * Wraps a lit-html template tag (`html` or `svg`) to add static value support.
+ */
+const withStatic = (coreTag) => (strings, ...values) => {
+    const l = values.length;
+    let staticValue;
+    let dynamicValue;
+    const staticStrings = [];
+    const dynamicValues = [];
+    let i = 0;
+    let hasStatics = false;
+    let s;
+    while (i < l) {
+        s = strings[i];
+        // Collect any unsafeStatic values, and their following template strings
+        // so that we treat a run of template strings and unsafe static values as
+        // a single template string.
+        while (i < l &&
+            ((dynamicValue = values[i]),
+                (staticValue = unwrapStaticValue(dynamicValue))) !== undefined) {
+            s += staticValue + strings[++i];
+            hasStatics = true;
+        }
+        // If the last value is static, we don't need to push it.
+        if (i !== l) {
+            dynamicValues.push(dynamicValue);
+        }
+        staticStrings.push(s);
+        i++;
+    }
+    // If the last value isn't static (which would have consumed the last
+    // string), then we need to add the last string.
+    if (i === l) {
+        staticStrings.push(strings[l]);
+    }
+    if (hasStatics) {
+        const key = staticStrings.join('$$lit$$');
+        strings = stringsCache.get(key);
+        if (strings === undefined) {
+            // Beware: in general this pattern is unsafe, and doing so may bypass
+            // lit's security checks and allow an attacker to execute arbitrary
+            // code and inject arbitrary content.
+            // eslint-disable-next-line @typescript-eslint/no-explicit-any
+            staticStrings.raw = staticStrings;
+            stringsCache.set(key, (strings = staticStrings));
+        }
+        values = dynamicValues;
+    }
+    return coreTag(strings, ...values);
+};
+/**
+ * Interprets a template literal as an HTML template that can efficiently
+ * render to and update a container.
+ *
+ * Includes static value support from `lit-html/static.js`.
+ */
+const html = withStatic(html$1);
+/**
+ * Interprets a template literal as an SVG template that can efficiently
+ * render to and update a container.
+ *
+ * Includes static value support from `lit-html/static.js`.
+ */
+const svg = withStatic(svg$1);
+
+export { html, literal, svg, unsafeStatic, withStatic };
+//# sourceMappingURL=static.js.map