diff options
| -rw-r--r-- | src/output.zig | 31 |
1 files changed, 28 insertions, 3 deletions
diff --git a/src/output.zig b/src/output.zig index 6ae8ae4ff..3d9241500 100644 --- a/src/output.zig +++ b/src/output.zig @@ -340,11 +340,15 @@ pub fn print(comptime fmt: string, args: anytype) void { } /// Debug-only logs which should not appear in release mode +/// To enable a specific log at runtime, set the environment variable +/// BUN_DEBUG_${TAG} to 1 +/// For example, to enable the "foo" log, set the environment variable +/// BUN_DEBUG_foo=1 +/// To enable all logs, set the environment variable +/// BUN_DEBUG_ALL=1 const _log_fn = fn (comptime fmt: string, args: anytype) callconv(.Inline) void; pub fn scoped(comptime tag: @Type(.EnumLiteral), comptime disabled: bool) _log_fn { - const disable = comptime !Environment.isDebug or disabled; - - if (comptime disable) { + if (comptime !Environment.isDebug) { return struct { pub inline fn log(comptime _: string, _: anytype) void {} }.log; @@ -355,8 +359,29 @@ pub fn scoped(comptime tag: @Type(.EnumLiteral), comptime disabled: bool) _log_f var buffered_writer: BufferedWriter = undefined; var out: BufferedWriter.Writer = undefined; var out_set = false; + var really_disable = disabled; + var evaluated_disable = false; + /// Debug-only logs which should not appear in release mode + /// To enable a specific log at runtime, set the environment variable + /// BUN_DEBUG_${TAG} to 1 + /// For example, to enable the "foo" log, set the environment variable + /// BUN_DEBUG_foo=1 + /// To enable all logs, set the environment variable + /// BUN_DEBUG_ALL=1 pub inline fn log(comptime fmt: string, args: anytype) void { + if (!evaluated_disable) { + evaluated_disable = true; + if (std.os.getenv("BUN_DEBUG_ALL") != null or + std.os.getenv("BUN_DEBUG_" ++ @tagName(tag)) != null) + { + really_disable = false; + } + } + + if (really_disable) + return; + if (!out_set) { buffered_writer = .{ .unbuffered_writer = writer(), |