From cd225b2cc66b93804390ca3e46f5a0b0cd9b6c53 Mon Sep 17 00:00:00 2001
From: tanjj4 <jiajie.tan@midea.com>
Date: Fri, 15 Sep 2023 10:23:13 +0800
Subject: [PATCH 1/3] added tofixed function

---
 devs/run-tests/02numbers.ts    |  8 +++++++-
 packages/core/src/corelib.d.ts | 13 +++++++++++++
 packages/core/src/index.ts     |  3 ++-
 packages/core/src/number.ts    |  3 +++
 4 files changed, 25 insertions(+), 2 deletions(-)
 create mode 100644 packages/core/src/number.ts

diff --git a/devs/run-tests/02numbers.ts b/devs/run-tests/02numbers.ts
index a8c93e682d..d7972fc1ad 100644
--- a/devs/run-tests/02numbers.ts
+++ b/devs/run-tests/02numbers.ts
@@ -242,10 +242,16 @@ function testEnumToString() {
     assert(enumTest + "" === "1", "enum tostring in concatenation")
 }
 
+function testToFixed() {
+    const numObj = 12345.6789;
+
+    assert(numObj.toFixed(5) === '12346') // '12346'; rounding, no fractional part
+}
+
 testComma()
 testNums()
 testNaN()
 testUnaryPlus()
 testEnumToString()
-
+testToFixed()
 
diff --git a/packages/core/src/corelib.d.ts b/packages/core/src/corelib.d.ts
index 09a94a2b29..1f3a299e55 100644
--- a/packages/core/src/corelib.d.ts
+++ b/packages/core/src/corelib.d.ts
@@ -197,6 +197,19 @@ interface StringConstructor {
 declare var String: StringConstructor
 
 interface Boolean {}
+
+interface NumberConstructor {
+    (number: Number): number
+    readonly prototype: Number
+}
+
+declare var Number: NumberConstructor
+
+interface Number {
+
+    // todo
+    toFixed(digits?: number): string
+}
 interface Number {}
 
 interface RegExp {}
diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
index 99a878bcdc..8d8b740b2e 100644
--- a/packages/core/src/index.ts
+++ b/packages/core/src/index.ts
@@ -14,4 +14,5 @@ import "./button"
 import "./magneticfieldlevel"
 import "./buzzer"
 import "./ledstrip"
-import "./gamepad"
\ No newline at end of file
+import "./gamepad"
+import "./number"
\ No newline at end of file
diff --git a/packages/core/src/number.ts b/packages/core/src/number.ts
new file mode 100644
index 0000000000..a8cf82b0d7
--- /dev/null
+++ b/packages/core/src/number.ts
@@ -0,0 +1,3 @@
+Number.prototype.toFixed = function(digits: number = 0): string {
+    return "";
+}
\ No newline at end of file

From 4564d67739a2329114458922cb001c627c304e95 Mon Sep 17 00:00:00 2001
From: tanjj4 <jiajie.tan@midea.com>
Date: Mon, 6 Nov 2023 17:35:22 +0800
Subject: [PATCH 2/3] adding properties to objects listed in builtin_proto_idx

---
 runtime/devicescript/objects.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/runtime/devicescript/objects.c b/runtime/devicescript/objects.c
index b75762b7b7..1e80756c70 100644
--- a/runtime/devicescript/objects.c
+++ b/runtime/devicescript/objects.c
@@ -261,8 +261,9 @@ static const uint8_t builtin_proto_idx[] = {
     [DEVS_BUILTIN_OBJECT_BUFFER] = 10,
     [DEVS_BUILTIN_OBJECT_GPIO_PROTOTYPE] = 11,
     [DEVS_BUILTIN_OBJECT_GPIO] = 12,
+    [DEVS_BUILTIN_OBJECT_NUMBER_PROTOTYPE] = 13,
 };
-#define MAX_PROTO 12
+#define MAX_PROTO 13
 
 devs_maplike_t *devs_get_builtin_object(devs_ctx_t *ctx, unsigned idx) {
     if (idx < sizeof(builtin_proto_idx)) {

From 07f496a80b645284bcb116502634b64bc6d92078 Mon Sep 17 00:00:00 2001
From: tanjj4 <jiajie.tan@midea.com>
Date: Tue, 7 Nov 2023 15:39:50 +0800
Subject: [PATCH 3/3] adding assert message

---
 devs/run-tests/02numbers.ts    | 5 ++---
 packages/core/src/corelib.d.ts | 2 --
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/devs/run-tests/02numbers.ts b/devs/run-tests/02numbers.ts
index d7972fc1ad..e26621618e 100644
--- a/devs/run-tests/02numbers.ts
+++ b/devs/run-tests/02numbers.ts
@@ -245,7 +245,7 @@ function testEnumToString() {
 function testToFixed() {
     const numObj = 12345.6789;
 
-    assert(numObj.toFixed(5) === '12346') // '12346'; rounding, no fractional part
+    assert(numObj.toFixed(5) === '12346', 'testToFixed') // '12346'; rounding, no fractional part
 }
 
 testComma()
@@ -253,5 +253,4 @@ testNums()
 testNaN()
 testUnaryPlus()
 testEnumToString()
-testToFixed()
-
+testToFixed()
\ No newline at end of file
diff --git a/packages/core/src/corelib.d.ts b/packages/core/src/corelib.d.ts
index 1f3a299e55..845dd7bc3b 100644
--- a/packages/core/src/corelib.d.ts
+++ b/packages/core/src/corelib.d.ts
@@ -199,7 +199,6 @@ declare var String: StringConstructor
 interface Boolean {}
 
 interface NumberConstructor {
-    (number: Number): number
     readonly prototype: Number
 }
 
@@ -210,7 +209,6 @@ interface Number {
     // todo
     toFixed(digits?: number): string
 }
-interface Number {}
 
 interface RegExp {}
 interface IterableIterator<T> {}