Add performance.{now,timeOrigin}

[saghul]

Ref: #16

[saghul]

@bnoordhuis Is this what you had in mind or would you rather not add it to the default context? Maybe a compile time flag? A new JS_NewContext2(rt, flags) ?

[bnoordhuis]

Nice!

[bnoordhuis]

Suggested change

	return (((uint64_t) ts.tv_sec) * 1000 + ts.tv_nsec / 1e6);
	return (uint64_t) ts.tv_sec * 1000 + ts.tv_nsec / 1e6;

You could also write it as return ts.tv_sec * 1000ull + ts.tv_nsec / 1e6;

[bnoordhuis]

Suggested change

	JS_DefinePropertyValueStr(ctx, performance, "timeOrigin",
	JS_NewFloat64(ctx, ctx->time_origin),
	JS_PROP_ENUMERABLE);
	JS_DefinePropertyValueStr(ctx, ctx->global_obj, "performance",
	JS_DupValue(ctx, performance),
	JS_PROP_ENUMERABLE);
	JS_DefinePropertyValueStr(ctx, performance, "timeOrigin",
	JS_NewFloat64(ctx, ctx->time_origin),
	JS_PROP_ENUMERABLE);
	JS_DefinePropertyValueStr(ctx, ctx->global_obj, "performance",
	JS_DupValue(ctx, performance),
	JS_PROP_ENUMERABLE);

[bnoordhuis]

Is this what you had in mind or would you rather not add it to the default context? Maybe a compile time flag? A new JS_NewContext2(rt, flags) ?

I was thinking of an opt-in (so not adding it by default) but, OTOH, it's probably fine.