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authorstephan <stephan@noemail.net>2023-01-29 06:01:32 +0000
committerstephan <stephan@noemail.net>2023-01-29 06:01:32 +0000
commit26c7cff254b09285c41e82656f5fa53cd7ce95f8 (patch)
treec4f480c910186655eaf380ed2efcad195e2cff1f /ext/wasm/api/sqlite3-worker1.c-pp.js
parent2f5330036d19b0dcbf82f7a29c6192ce7ca9df93 (diff)
downloadsqlite-26c7cff254b09285c41e82656f5fa53cd7ce95f8.tar.gz
sqlite-26c7cff254b09285c41e82656f5fa53cd7ce95f8.zip
Two JS file renames which got inadvertently undone while setting up [9062b31174618c0e]. Cosmetic cleanups in ext/wasm/dist.make.
FossilOrigin-Name: 0c2fde767f77d6204e95737edd573f42d72e956a3c20ea7e4daeff906657bbe5
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+/*
+ 2022-05-23
+
+ The author disclaims copyright to this source code. In place of a
+ legal notice, here is a blessing:
+
+ * May you do good and not evil.
+ * May you find forgiveness for yourself and forgive others.
+ * May you share freely, never taking more than you give.
+
+ ***********************************************************************
+
+ This is a JS Worker file for the main sqlite3 api. It loads
+ sqlite3.js, initializes the module, and postMessage()'s a message
+ after the module is initialized:
+
+ {type: 'sqlite3-api', result: 'worker1-ready'}
+
+ This seemingly superfluous level of indirection is necessary when
+ loading sqlite3.js via a Worker. Instantiating a worker with new
+ Worker("sqlite.js") will not (cannot) call sqlite3InitModule() to
+ initialize the module due to a timing/order-of-operations conflict
+ (and that symbol is not exported in a way that a Worker loading it
+ that way can see it). Thus JS code wanting to load the sqlite3
+ Worker-specific API needs to pass _this_ file (or equivalent) to the
+ Worker constructor and then listen for an event in the form shown
+ above in order to know when the module has completed initialization.
+
+ This file accepts a URL arguments to adjust how it loads sqlite3.js:
+
+ - `sqlite3.dir`, if set, treats the given directory name as the
+ directory from which `sqlite3.js` will be loaded.
+*/
+"use strict";
+(()=>{
+//#if target=es6-bundler-friendly
+ importScripts('sqlite3.js');
+//#else
+ const urlParams = new URL(self.location.href).searchParams;
+ let theJs = 'sqlite3.js';
+ if(urlParams.has('sqlite3.dir')){
+ theJs = urlParams.get('sqlite3.dir') + '/' + theJs;
+ }
+ //console.warn("worker1 theJs =",theJs);
+ importScripts(theJs);
+//#endif
+ sqlite3InitModule().then((sqlite3)=>{
+ sqlite3.initWorker1API();
+ });
+})();