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Improve script logging

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1 - Add a custom console.lp function to make our debug logs stand out from
    script logs.

2 - In some cases, significantly improve how JavaScript values are serialized
    in debug logs and in console.log.
This commit is contained in:
Karl Seguin
2025-05-31 21:23:02 +08:00
parent c3f3eea7fb
commit 6e80b03faa
3 changed files with 66 additions and 26 deletions
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47
src/runtime/js.zig
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@@ -1373,6 +1373,12 @@ pub fn Env(comptime State: type, comptime WebApis: type) type {
return valueToString(scope.call_arena, js_value, scope.isolate, scope.context);
}
pub fn toDetailString(self: JsObject) ![]const u8 {
const scope = self.scope;
const js_value = self.js_obj.toValue();
return valueToDetailString(scope.call_arena, js_value, scope.isolate, scope.context);
}
pub fn format(self: JsObject, comptime _: []const u8, _: std.fmt.FormatOptions, writer: anytype) !void {
return writer.writeAll(try self.toString());
}
@@ -2493,6 +2499,15 @@ fn Caller(comptime E: type, comptime State: type) type {
}
fn handleError(self: *Self, comptime Struct: type, comptime named_function: NamedFunction, err: anyerror, info: anytype) void {
if (builtin.mode == .Debug and log.enabled(.js, .warn) and @hasDecl(@TypeOf(info), "length")) {
const args_dump = self.serializeFunctionArgs(info) catch "failed to serialize args";
log.warn(.js, "function call error", .{
.name = named_function.full_name,
.err = err,
.args = args_dump,
});
}
const isolate = self.isolate;
var js_err: ?v8.Value = switch (err) {
error.InvalidArgument => createTypeException(isolate, "invalid argument"),
@@ -2635,15 +2650,6 @@ fn Caller(comptime E: type, comptime State: type) type {
const last_js_parameter = params_to_map.len - 1;
var is_variadic = false;
errdefer |err| if (builtin.mode == .Debug and log.enabled(.js, .warn)) {
const args_dump = self.serializeFunctionArgs(info) catch "failed to serialize args";
log.warn(.js, "function call error", .{
.name = named_function.full_name,
.err = err,
.args = args_dump,
});
};
{
// This is going to get complicated. If the last Zig paremeter
// is a slice AND the corresponding javascript parameter is
@@ -2710,6 +2716,7 @@ fn Caller(comptime E: type, comptime State: type) type {
const isolate = self.isolate;
const context = self.context;
const arena = self.call_arena;
const separator = log.separator();
const js_parameter_count = info.length();
var arr: std.ArrayListUnmanaged(u8) = .{};
@@ -2718,7 +2725,7 @@ fn Caller(comptime E: type, comptime State: type) type {
const value_string = try valueToDetailString(arena, js_value, isolate, context);
const value_type = try jsStringToZig(arena, try js_value.typeOf(isolate), isolate);
try std.fmt.format(arr.writer(arena), "{s}{d}: {s} ({s})", .{
log.separator(),
separator,
i + 1,
value_string,
value_type,
@@ -3057,9 +3064,23 @@ const TaggedAnyOpaque = struct {
subtype: ?SubType,
};
fn valueToDetailString(allocator: Allocator, value: v8.Value, isolate: v8.Isolate, context: v8.Context) ![]u8 {
const str = try value.toDetailString(context);
return jsStringToZig(allocator, str, isolate);
fn valueToDetailString(arena: Allocator, value: v8.Value, isolate: v8.Isolate, context: v8.Context) ![]u8 {
var str: ?v8.String = null;
if (value.isObject() and !value.isFunction()) {
str = try v8.Json.stringify(context, value, null);
if (str.?.lenUtf8(isolate) == 2) {
// {} isn't useful, null this so that we can get the toDetailString
// (which might also be useless, but maybe not)
str = null;
}
}
if (str == null) {
str = try value.toDetailString(context);
}
return jsStringToZig(arena, str.?, isolate);
}
fn valueToString(allocator: Allocator, value: v8.Value, isolate: v8.Isolate, context: v8.Context) ![]u8 {