use duk_check_type_mask() internally

src/duk_api.c

@@ -2159,13 +2159,11 @@ int duk_is_primitive(duk_context *ctx, int index) {
 }
 
 int duk_is_object_coercible(duk_context *ctx, int index) {
-	int mask = DUK_TYPE_MASK_BOOLEAN |
-	           DUK_TYPE_MASK_NUMBER |
-	           DUK_TYPE_MASK_STRING |
-	           DUK_TYPE_MASK_OBJECT;
 	/* FIXME: what about buffer and pointer? */
-
-	return (duk_get_type_mask(ctx, index) & mask ? 1 : 0);
+	return duk_check_type_mask(ctx, index, DUK_TYPE_MASK_BOOLEAN |
+	                                       DUK_TYPE_MASK_NUMBER |
+	                                       DUK_TYPE_MASK_STRING |
+	                                       DUK_TYPE_MASK_OBJECT);
 }
 
 /*

src/duk_builtin_json.c

@@ -1141,7 +1141,7 @@ static int json_enc_value1(duk_json_enc_ctx *js_ctx, int idx_holder) {
 	tv = duk_get_tval(ctx, -1);
 	DUK_ASSERT(tv != NULL);
 
-	if (duk_get_type_mask(ctx, -1) & js_ctx->mask_for_undefined) {
+	if (duk_check_type_mask(ctx, -1, js_ctx->mask_for_undefined)) {
 		/* will result in undefined */
 		DUK_DDDPRINT("-> will result in undefined (type mask check)");
 		goto undef;

src/duk_builtin_object.c

@@ -15,8 +15,9 @@ int duk_builtin_object_constructor(duk_context *ctx) {
 		return 1;
 	}
 
-	if (duk_get_type_mask(ctx, 0) &
-	    (DUK_TYPE_MASK_STRING | DUK_TYPE_MASK_BOOLEAN | DUK_TYPE_MASK_NUMBER)) {
+	if (duk_check_type_mask(ctx, 0, DUK_TYPE_MASK_STRING |
+	                                DUK_TYPE_MASK_BOOLEAN |
+	                                DUK_TYPE_MASK_NUMBER)) {
 		duk_to_object(ctx, 0);
 		return 1;
 	}