Automatically install npm packages when running a script in Bun's runtime (#1459)

* Update bundler.zig

* WIP

* Update README.md

* Update README.md

* wip

* Support running scripts without package.json

* Add `--no-auto-install` and `--prefer-offline` flags

* WIP

* wip

* Update headers-handwritten.h

* WIP

* Build fixes

* Fix UAF

* Update install.zig

* Must call .allocate()

* Micro-optimization: only call .timestamp() once per tick when installing packages

* Support progress bar

* Extend the timestamp for package staleness checks to 1 day

* Add `--prefer-latest`, `-i` CLI Flags

* Fix crash

* Support line text manually being set on an Error instance

* Add a few more fields for error messages

* Fix bug when counting 8 character strings in string builder

* Implement error handling for automatic package installs!

* Fix crash

* Make it say module when there's a slash

* Update module_loader.zig

* Ban dependency versions in import specifiers when a package.json is present

* Remove unused field

* Update README.md

* Update README.md

* Update README.md

* Update README.md

Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/string_builder.zig b/src/string_builder.zig
index d46b014e2..adb9e2ae0 100644
--- a/src/string_builder.zig
+++ b/src/string_builder.zig
@@ -77,3 +77,10 @@ pub fn fmt(this: *StringBuilder, comptime str: string, args: anytype) string {
 pub fn fmtCount(this: *StringBuilder, comptime str: string, args: anytype) void {
     this.cap += std.fmt.count(str, args);
 }
+
+pub fn allocatedSlice(this: *StringBuilder) []u8 {
+    var ptr = this.ptr orelse return &[_]u8{};
+    std.debug.assert(this.cap > 0);
+    std.debug.assert(this.len > 0);
+    return ptr[0..this.cap];
+}