prevent injected scripts from executing out of orderv2.0-beta1

1 files changed, 5 insertions, 0 deletions

diff --git a/content/content.js b/content/content.js
index c492d53..998ff49 100644
--- a/content/content.js
+++ b/content/content.js
@@ -143,12 +143,17 @@ async function main() {
 	    for (const script_contents of scripts) {
 		const html_ns = "http://www.w3.org/1999/xhtml";
 		const script = document.createElementNS(html_ns, "script");
+		const load_prom = new Promise(
+		    (...cbs) => [script.onload, script.onerror] = cbs
+		);
 
 		const blobby_opts = {type: "text/javascript;charset=UTF-8"};
 		const blobby = new Blob([script_contents], blobby_opts);
 		script.src = URL.createObjectURL(blobby);
 		script.setAttribute("nonce", policy.nonce);
+
 		document.documentElement.append(script);
+		await load_prom;
 		script.remove();
 	    }
 	}