diff --git a/example/main.js b/example/main.js
index 3f5e8e7..f9a893b 100644
--- a/example/main.js
+++ b/example/main.js
@@ -13,6 +13,7 @@
         const output = document.getElementById("output") || document.body;
         const canvas = document.createElement("canvas");
         output.appendChild(canvas);
+        canvas.tabIndex = 1;
         canvas.style.position = "absolute";
         canvas.style.left = "0px";
         canvas.style.right = "0px";
@@ -160,4 +161,4 @@
     }
 }
 exports.default = main;
-//# 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
\ No newline at end of file
+//# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoibWFpbi5qcyIsInNvdXJjZVJvb3QiOiIiLCJzb3VyY2VzIjpbIm1haW4udHMiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6Ijs7QUFBQSxrQ0FBa0M7QUFDbEMsMkNBQTJDO0FBQzNDLDJDQUEyQztBQUMzQyxvQ0FBa0M7QUFDbEMsb0NBQWtDO0FBQ2xDLDhDQUErQztBQUUvQyxnRUFBc0Q7QUFFdEQ7SUFDSSxzQkFBc0I7SUFDdEIsRUFBRSxDQUFDLENBQUMsT0FBTSxDQUFDLE1BQU0sQ0FBQyxLQUFLLFdBQVcsQ0FBQyxDQUFDLENBQUM7UUFDakMsTUFBTSxNQUFNLEdBQWdCLFFBQVEsQ0FBQyxjQUFjLENBQUMsUUFBUSxDQUFDLElBQUksUUFBUSxDQUFDLElBQUksQ0FBQztRQUMvRSxNQUFNLE1BQU0sR0FBc0IsUUFBUSxDQUFDLGFBQWEsQ0FBQyxRQUFRLENBQUMsQ0FBQztRQUNuRSxNQUFNLENBQUMsV0FBVyxDQUFDLE1BQU0sQ0FBQyxDQUFDO1FBQzNCLE1BQU0sQ0FBQyxRQUFRLEdBQUcsQ0FBQyxDQUFDO1FBQ3BCLE1BQU0sQ0FBQyxLQUFLLENBQUMsUUFBUSxHQUFHLFVBQVUsQ0FBQztRQUNuQyxNQUFNLENBQUMsS0FBSyxDQUFDLElBQUksR0FBRyxLQUFLLENBQUM7UUFDMUIsTUFBTSxDQUFDLEtBQUssQ0FBQyxLQUFLLEdBQUcsS0FBSyxDQUFDO1FBQzNCLE1BQU0sQ0FBQyxLQUFLLENBQUMsR0FBRyxHQUFHLEtBQUssQ0FBQztRQUN6QixNQUFNLENBQUMsS0FBSyxDQUFDLE1BQU0sR0FBRyxLQUFLLENBQUM7UUFDNUIsTUFBTSxDQUFDLEtBQUssQ0FBQyxLQUFLLEdBQUcsTUFBTSxDQUFDO1FBQzVCLE1BQU0sQ0FBQyxLQUFLLENBQUMsTUFBTSxHQUFHLE1BQU0sQ0FBQztRQUM3QixNQUFNLENBQUMsS0FBSyxHQUFHLE1BQU0sQ0FBQyxXQUFXLENBQUM7UUFDbEMsTUFBTSxDQUFDLE1BQU0sR0FBRyxNQUFNLENBQUMsWUFBWSxDQUFDO1FBQ3BDLE1BQU0sQ0FBQyxnQkFBZ0IsQ0FBQyxRQUFRLEVBQUUsR0FBRyxFQUFFO1lBQ25DLE1BQU0sQ0FBQyxLQUFLLEdBQUcsTUFBTSxDQUFDLFdBQVcsQ0FBQztZQUNsQyxNQUFNLENBQUMsTUFBTSxHQUFHLE1BQU0sQ0FBQyxZQUFZLENBQUM7UUFDeEMsQ0FBQyxDQUFDLENBQUM7UUFDSCxVQUFVLENBQUMsSUFBSSxDQUFDLE1BQU0sQ0FBQyxDQUFDO0lBQzVCLENBQUM7SUFBQyxJQUFJLENBQUMsQ0FBQztRQUNKLFVBQVUsQ0FBQyxJQUFJLENBQUMsSUFBSSxDQUFDLENBQUM7SUFDMUIsQ0FBQztJQUVELGNBQWM7SUFDZCxLQUFLLENBQUMsa0JBQWtCLEVBQUUsQ0FBQztJQUMzQiwwQkFBMEI7SUFFMUIsYUFBYTtJQUNiLHdKQUF3SjtJQUN4SixxSEFBcUg7SUFDckgsdUtBQXVLO0lBQ3ZLLGtNQUFrTTtJQUNsTSxxRUFBcUU7SUFDckUsOEhBQThIO0lBQzlILG9DQUFvQztJQUNwQyw0QkFBNEI7SUFDNUIsOEVBQThFO0lBQzlFLGdGQUFnRjtJQUNoRiwwRUFBMEU7SUFDMUUsMkVBQTJFO0lBQzNFLHNJQUFzSTtJQUN0SSwyQkFBMkI7SUFFM0IsSUFBSSxnQkFBZ0IsR0FBWSxJQUFJLENBQUM7SUFDckMsSUFBSSxtQkFBbUIsR0FBWSxLQUFLLENBQUM7SUFDekMsSUFBSSxXQUFXLEdBQVcsSUFBSSxjQUFNLENBQUMsSUFBSSxFQUFFLElBQUksRUFBRSxJQUFJLEVBQUUsSUFBSSxDQUFDLENBQUM7SUFFN0QsWUFBWSxDQUFDLElBQUksQ0FBQyxHQUFXLEdBQUcsQ0FBQztJQUVqQyxNQUFNLGFBQWEsR0FBaUIsSUFBSSxrQ0FBWSxFQUFFLENBQUM7SUFFdkQsSUFBSSxNQUFNLEdBQVc7UUFDakIsZ0NBQWdDO1FBQ2hDLDhCQUE4QjtRQUM5Qiw2QkFBNkI7UUFDN0IsY0FBYztRQUNkLEVBQUU7S0FDTCxDQUFDLElBQUksQ0FBQyxJQUFJLENBQUMsQ0FBQztJQUViLDJCQUEyQixLQUFhLEVBQUUsU0FBeUMsSUFBSTtRQUNuRixLQUFLLENBQUMsS0FBSyxDQUFDLEtBQUssRUFBRSxNQUFNLDRCQUFxQyxDQUFDO1FBQy9ELEtBQUssQ0FBQyxrQkFBa0IsQ0FBQyxVQUFVLEVBQUUsQ0FBQyxDQUFDLEdBQUcsTUFBTSxFQUFFLEVBQUUsQ0FBQyxDQUFDLE1BQU0sR0FBRyxDQUFDLENBQUMsRUFBRSxJQUFJLEVBQUUsY0FBTSxDQUFDLElBQUksMkJBQXFDLENBQUM7UUFDMUgsS0FBSyxDQUFDLFFBQVEsRUFBRSxDQUFDO1FBQ2pCLEtBQUssQ0FBQyxZQUFZLENBQUMsS0FBSyxDQUFDLENBQUM7UUFDMUIsRUFBRSxDQUFDLENBQUMsS0FBSyxDQUFDLGFBQWEsRUFBRSxDQUFDLENBQzFCLENBQUM7WUFDRyxLQUFLLENBQUMsWUFBWSxFQUFFLENBQUM7WUFDckIsS0FBSyxDQUFDLGVBQWUsQ0FBQyxLQUFLLENBQUMsQ0FBQztZQUM3QixLQUFLLENBQUMsZUFBZSxDQUFDLGdEQUFnRCxDQUFDLENBQUM7WUFDeEUsS0FBSyxDQUFDLGNBQWMsRUFBRSxDQUFDO1lBQ3ZCLEtBQUssQ0FBQyxVQUFVLEVBQUUsQ0FBQztRQUN2QixDQUFDO1FBQ0QsSUFBSSxDQUFDO1lBQ0QsSUFBSSxDQUFDLE1BQU0sQ0FBQyxDQUFDO1FBQ2pCLENBQUM7UUFBQyxLQUFLLENBQUMsQ0FBQyxDQUFDLENBQUMsQ0FBQyxDQUFDO1lBQ1QsS0FBSyxDQUFDLFdBQVcsQ0FBQyxJQUFJLGNBQU0sQ0FBQyxHQUFHLEVBQUMsR0FBRyxFQUFDLEdBQUcsRUFBQyxHQUFHLENBQUMsRUFBRSxTQUFTLENBQUMsQ0FBQztZQUMxRCxLQUFLLENBQUMsUUFBUSxFQUFFLENBQUM7WUFDakIsS0FBSyxDQUFDLElBQUksQ0FBQyxDQUFDLENBQUMsT0FBTyxDQUFDLENBQUM7UUFDMUIsQ0FBQztRQUNELEtBQUssQ0FBQyxHQUFHLEVBQUUsQ0FBQztJQUNoQixDQUFDO0lBRUQsSUFBSSxtQkFBbUIsR0FBWSxLQUFLLENBQUM7SUFFekMsWUFBWTtJQUNaLElBQUksSUFBSSxHQUFZLEtBQUssQ0FBQztJQUMxQixlQUFlLElBQVk7UUFDdkIscUhBQXFIO1FBQ3JILGlHQUFpRztRQUNqRyx1R0FBdUc7UUFDdkcsd0hBQXdIO1FBQ3hILFVBQVUsQ0FBQyxRQUFRLENBQUMsSUFBSSxDQUFDLENBQUM7UUFFMUIsMEJBQTBCO1FBQzFCLGtIQUFrSDtRQUNsSCxDQUFDO1lBQ0cseUJBQXlCO1lBQ3pCLEtBQUssQ0FBQyxJQUFJLENBQUMsZUFBZSxDQUFDLENBQUMsQ0FBb0MsOENBQThDO1lBQzlHLEtBQUssQ0FBQyxXQUFXLENBQUMsT0FBTyxFQUFFLENBQUMsS0FBSyxHQUFHLENBQUMsRUFBRSxFQUFFLENBQUMsQ0FBQyxHQUFHLEtBQUssRUFBRSxHQUFHLEVBQUUsR0FBRyxDQUFDLENBQUMsQ0FBQyw2Q0FBNkM7WUFDN0csS0FBSyxDQUFDLFVBQVUsQ0FBQyxhQUFhLEVBQUUsV0FBVyxDQUFDLENBQUMsQ0FBbUIsMkJBQTJCO1lBQzNGLEVBQUUsQ0FBQyxDQUFDLEtBQUssQ0FBQyxNQUFNLENBQUMsYUFBYSxDQUFDLENBQUM7Z0JBQzVCLGdCQUFnQixHQUFHLENBQUMsZ0JBQWdCLENBQUM7WUFDekMsRUFBRSxDQUFDLENBQUMsS0FBSyxDQUFDLE1BQU0sQ0FBQyxnQkFBZ0IsQ0FBQyxDQUFDO2dCQUMvQixtQkFBbUIsR0FBRyxDQUFDLG1CQUFtQixDQUFDO1lBQy9DLEtBQUssQ0FBQyxJQUFJLENBQUMsdUJBQXVCLENBQUMsTUFBTSxHQUFHLEtBQUssQ0FBQyxLQUFLLEVBQUUsQ0FBQyxTQUFTLENBQUMsQ0FBQyxPQUFPLENBQUMsQ0FBQyxDQUFDLGNBQWMsS0FBSyxDQUFDLEtBQUssRUFBRSxDQUFDLFNBQVMsQ0FBQyxPQUFPLENBQUMsQ0FBQyxDQUFDLE9BQU8sQ0FBQyxDQUFDO1lBRXhJLEVBQUUsQ0FBQyxDQUFDLEtBQUssQ0FBQyxNQUFNLENBQUMsZUFBZSxDQUFDLENBQUM7Z0JBQzlCLGFBQWEsQ0FBQyxJQUFJLEdBQUcsQ0FBQyxhQUFhLENBQUMsSUFBSSxDQUFDO1lBQzdDLEVBQUUsQ0FBQyxDQUFDLGFBQWEsQ0FBQyxJQUFJLENBQUM7Z0JBQ25CLGFBQWEsQ0FBQyxVQUFVLENBQUMsZUFBZSxFQUFFLFNBQVMsQ0FBQyxNQUFNLENBQUMsQ0FBQztZQUNoRSxNQUFNLEVBQUUsR0FBdUIsU0FBUyxDQUFDLFFBQVEsRUFBRSxDQUFDO1lBQ3BELG9FQUFvRTtZQUNwRSxzRUFBc0U7WUFDdEUscUVBQXFFO1lBQ3JFLG9FQUFvRTtZQUNwRSxxRUFBcUU7WUFDckUsS0FBSyxDQUFDLElBQUksQ0FBQywwQ0FBMEMsRUFBRSxDQUFDLE9BQU8sRUFBRSxDQUFDLENBQUM7WUFDbkUsc0VBQXNFO1lBQ3RFLEtBQUssQ0FBQyxJQUFJLENBQUMsMENBQTBDLEVBQUUsQ0FBQyxRQUFRLEVBQUUsQ0FBQyxDQUFDO1lBQ3BFLEtBQUssQ0FBQyxJQUFJLENBQUMsMENBQTBDLEVBQUUsQ0FBQyxRQUFRLEVBQUUsQ0FBQyxDQUFDO1lBQ3BFLHVFQUF1RTtZQUN2RSxFQUFFLENBQUMsQ0FBQyxLQUFLLENBQUMsTUFBTSxDQUFDLGdCQUFnQixDQUFDLENBQUM7Z0JBQy9CLG1CQUFtQixHQUFHLENBQUMsbUJBQW1CLENBQUM7WUFDL0MsRUFBRSxDQUFDLENBQUMsbUJBQW1CLENBQUM7Z0JBQ3BCLGlCQUFpQixDQUFDLGdCQUFnQixFQUFFLENBQUMsS0FBSyxHQUFHLG1CQUFtQixFQUFFLEVBQUUsQ0FBQyxtQkFBbUIsR0FBRyxLQUFLLENBQUMsQ0FBQztRQUMxRyxDQUFDO1FBRUQsMkdBQTJHO1FBQzNHLEVBQUUsQ0FBQyxDQUFDLG1CQUFtQixDQUFDLENBQUMsQ0FBQztZQUN0QixLQUFLLENBQUMsS0FBSyxDQUFDLGdCQUFnQixFQUFFLENBQUMsS0FBSyxHQUFHLG1CQUFtQixFQUFFLEVBQUUsQ0FBQyxtQkFBbUIsR0FBRyxLQUFLLDRCQUFxQyxDQUFDO1lBQ2hJLEtBQUssQ0FBQyxJQUFJLENBQUMsNEJBQTRCLENBQUMsQ0FBQztZQUN6QyxLQUFLLENBQUMsR0FBRyxFQUFFLENBQUM7UUFDaEIsQ0FBQztRQUVELHdGQUF3RjtRQUN4RixFQUFFLENBQUMsQ0FBQyxnQkFBZ0IsQ0FBQyxDQUFDLENBQUM7WUFDbkIsS0FBSyxDQUFDLGdCQUFnQixDQUFDLElBQUksY0FBTSxDQUFDLEdBQUcsRUFBRSxFQUFFLENBQUMsdUJBQTBCLENBQUEsQ0FBQywyS0FBMks7WUFDaFAsVUFBVSxDQUFBLDJCQUFjLENBQUMsQ0FBQyxLQUFLLEdBQUcsZ0JBQWdCLEVBQUUsRUFBRSxDQUFDLGdCQUFnQixHQUFHLEtBQUssQ0FBQyxDQUFDO1FBQ3JGLENBQUM7UUFFRCxVQUFVLENBQUMsUUFBUSxFQUFFLENBQUM7UUFFdEIsWUFBWTtRQUNaLE1BQU0sRUFBRSxHQUFpQyxVQUFVLENBQUMsRUFBRSxDQUFDO1FBQ3ZELEVBQUUsSUFBSSxFQUFFLENBQUMsUUFBUSxDQUFDLENBQUMsRUFBRSxDQUFDLEVBQUUsRUFBRSxDQUFDLGtCQUFrQixFQUFFLEVBQUUsQ0FBQyxtQkFBbUIsQ0FBQyxDQUFDO1FBQ3ZFLEVBQUUsSUFBSSxFQUFFLENBQUMsVUFBVSxDQUFDLFdBQVcsQ0FBQyxDQUFDLEVBQUUsV0FBVyxDQUFDLENBQUMsRUFBRSxXQUFXLENBQUMsQ0FBQyxFQUFFLFdBQVcsQ0FBQyxDQUFDLENBQUMsQ0FBQztRQUNoRixFQUFFLElBQUksRUFBRSxDQUFDLEtBQUssQ0FBQyxFQUFFLENBQUMsZ0JBQWdCLENBQUMsQ0FBQztRQUNwQyw4R0FBOEc7UUFFOUcsVUFBVSxDQUFDLGVBQWUsRUFBRSxDQUFDO1FBRTdCLEVBQUUsQ0FBQyxDQUFDLE9BQU0sQ0FBQyxNQUFNLENBQUMsS0FBSyxXQUFXLENBQUMsQ0FBQyxDQUFDO1lBQ2pDLE1BQU0sQ0FBQyxxQkFBcUIsQ0FBQyxJQUFJLENBQUMsQ0FBQyxDQUFDLEtBQUssQ0FBQyxDQUFDLENBQUMsS0FBSyxDQUFDLENBQUM7UUFDdkQsQ0FBQztJQUNMLENBQUM7SUFFRDtRQUNJLFVBQVU7UUFDVixVQUFVLENBQUMsUUFBUSxFQUFFLENBQUM7SUFDMUIsQ0FBQztJQUVELEVBQUUsQ0FBQyxDQUFDLE9BQU0sQ0FBQyxNQUFNLENBQUMsS0FBSyxXQUFXLENBQUMsQ0FBQyxDQUFDO1FBQ2pDLE1BQU0sQ0FBQyxxQkFBcUIsQ0FBQyxLQUFLLENBQUMsQ0FBQztJQUN4QyxDQUFDO0lBQUMsSUFBSSxDQUFDLENBQUM7UUFDSixLQUFLLENBQUMsR0FBRyxHQUFHLElBQUksQ0FBQyxDQUFDO1FBQ2xCLEtBQUssRUFBRSxDQUFDO0lBQ1osQ0FBQztBQUNMLENBQUM7QUF6S0QsdUJBeUtDIn0=
\ No newline at end of file

diff --git a/example/main.js b/example/main.js
index 3f5e8e7..f9a893b 100644
--- a/example/main.js
+++ b/example/main.js
@@ -13,6 +13,7 @@
         const output = document.getElementById("output") || document.body;
         const canvas = document.createElement("canvas");
         output.appendChild(canvas);
+        canvas.tabIndex = 1;
         canvas.style.position = "absolute";
         canvas.style.left = "0px";
         canvas.style.right = "0px";
@@ -160,4 +161,4 @@
     }
 }
 exports.default = main;
-//# 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
\ No newline at end of file
+//# 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
\ No newline at end of file
diff --git a/example/main.ts b/example/main.ts
index 783ad71..ca5b8e5 100644
--- a/example/main.ts
+++ b/example/main.ts
@@ -13,6 +13,7 @@
         const output: HTMLElement = document.getElementById("output") || document.body;
         const canvas: HTMLCanvasElement = document.createElement("canvas");
         output.appendChild(canvas);
+        canvas.tabIndex = 1;
         canvas.style.position = "absolute";
         canvas.style.left = "0px";
         canvas.style.right = "0px";