Write out builtins with TypeScript + Minify them (#2999)

* start work drafting how builtins will work

* work on ts builtin

* builtins stuff so far

* builtins

* done for today

* continue work

* working on it

* bindings so far

* well, it builds. doesnt run

* IT RUNS

* still lots of ts errors but it is functional

* sloppy mode

1 files changed, 25 insertions, 0 deletions

diff --git a/src/bun.js/builtins/codegen/helpers.ts b/src/bun.js/builtins/codegen/helpers.ts
new file mode 100644
index 000000000..6345f8ffa
--- /dev/null
+++ b/src/bun.js/builtins/codegen/helpers.ts
@@ -0,0 +1,25 @@
+export function fmtCPPString(str: string) {
+  return (
+    '"' +
+    str
+      .replace(/\\/g, "\\\\")
+      .replace(/"/g, '\\"')
+      .replace(/\n/g, "\\n")
+      .replace(/\r/g, "\\r")
+      .replace(/\t/g, "\\t")
+      .replace(/\?/g, "\\?") + // https://stackoverflow.com/questions/1234582
+    '"'
+  );
+}
+
+export function cap(str: string) {
+  return str[0].toUpperCase() + str.slice(1);
+}
+
+export function low(str: string) {
+  if (str.startsWith("JS")) {
+    return "js" + str.slice(2);
+  }
+
+  return str[0].toLowerCase() + str.slice(1);
+}