Add packages to optimize svgs dynamically

These packages will be used to dynamically optimize SVG images
during the build.

R=jacktfranklin@chromium.org

Bug: 1216402
Change-Id: I04e95aa7d79c9d67beaf8a7861182c52b16b7d0f
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2939992
Reviewed-by: Jack Franklin <jacktfranklin@chromium.org>
Commit-Queue: Tim van der Lippe <tvanderlippe@chromium.org>
diff --git a/node_modules/nth-check/lib/index.js b/node_modules/nth-check/lib/index.js
new file mode 100644
index 0000000..fcab3e2
--- /dev/null
+++ b/node_modules/nth-check/lib/index.js
@@ -0,0 +1,34 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.compile = exports.parse = void 0;
+var parse_1 = require("./parse");
+Object.defineProperty(exports, "parse", { enumerable: true, get: function () { return parse_1.parse; } });
+var compile_1 = require("./compile");
+Object.defineProperty(exports, "compile", { enumerable: true, get: function () { return compile_1.compile; } });
+/**
+ * Parses and compiles a formula to a highly optimized function.
+ * Combination of `parse` and `compile`.
+ *
+ * If the formula doesn't match any elements,
+ * it returns [`boolbase`](https://github.com/fb55/boolbase)'s `falseFunc`.
+ * Otherwise, a function accepting an _index_ is returned, which returns
+ * whether or not the passed _index_ matches the formula.
+ *
+ * Note: The nth-rule starts counting at `1`, the returned function at `0`.
+ *
+ * @param formula The formula to compile.
+ * @example
+ * const check = nthCheck("2n+3");
+ *
+ * check(0); // `false`
+ * check(1); // `false`
+ * check(2); // `true`
+ * check(3); // `false`
+ * check(4); // `true`
+ * check(5); // `false`
+ * check(6); // `true`
+ */
+function nthCheck(formula) {
+    return compile_1.compile(parse_1.parse(formula));
+}
+exports.default = nthCheck;