feat: Add support for Date <-> chrono::DateTime<Utc>

crates/backend/src/typegen.rs

@@ -168,6 +168,7 @@ static KNOWN_TYPES: Lazy<HashMap<&'static str, &'static str>> = Lazy::new(|| {
     ("BigInt64Array", "BigInt64Array"),
     ("BigUint64Array", "BigUint64Array"),
     ("DataView", "DataView"),
+    ("DateTime", "Date"),
     ("Date", "Date"),
     ("JsDate", "Date"),
     ("JsBuffer", "Buffer"),

crates/napi/Cargo.toml

@@ -20,7 +20,8 @@ async = ["tokio_rt"]
 compat-mode = []
 default = ["napi3", "compat-mode"]                                               # for most Node.js users
 experimental = ["napi-sys/experimental"]
-full = ["latin1", "napi8", "async", "serde-json", "experimental"]
+chrono_date = ["chrono"]
+full = ["latin1", "napi8", "async", "serde-json", "experimental", "chrono_date"]
 latin1 = ["encoding_rs"]
 napi1 = []
 napi2 = ["napi1"]
@@ -48,12 +49,16 @@ tokio_time = ["tokio/time"]
 [dependencies]
 ctor = "0.1"
 lazy_static = "1"
-napi-sys = {version = "2.1.0", path = "../sys"}
+napi-sys = { version = "2.1.0", path = "../sys" }
 
 [dependencies.encoding_rs]
 optional = true
 version = "0.8"
 
+[dependencies.chrono]
+optional = true
+version = "0.4"
+
 [dependencies.tokio]
 features = ["rt", "rt-multi-thread", "sync"]
 optional = true
@@ -68,4 +73,8 @@ optional = true
 version = "1"
 
 [target.'cfg(windows)'.dependencies]
-windows = {version = "0.30", features = ["Win32_System_WindowsProgramming", "Win32_System_LibraryLoader", "Win32_Foundation"]}
+windows = { version = "0.30", features = [
+    "Win32_System_WindowsProgramming",
+    "Win32_System_LibraryLoader",
+    "Win32_Foundation",
+] }

crates/napi/src/bindgen_runtime/js_values.rs

@@ -8,6 +8,8 @@ mod arraybuffer;
 mod bigint;
 mod boolean;
 mod buffer;
+#[cfg(all(feature = "chrono_date", feature = "napi5"))]
+mod date;
 mod either;
 mod external;
 mod function;

crates/napi/src/bindgen_runtime/js_values/date.rs

@@ -0,0 +1,52 @@
+use crate::{bindgen_prelude::*, check_status, sys, ValueType};
+use chrono::{DateTime, NaiveDateTime, Utc};
+
+impl TypeName for DateTime<Utc> {
+  fn type_name() -> &'static str {
+    "DateTime"
+  }
+
+  fn value_type() -> ValueType {
+    ValueType::Object
+  }
+}
+
+impl ValidateNapiValue for DateTime<Utc> {
+  fn type_of() -> Vec<ValueType> {
+    vec![ValueType::Object]
+  }
+}
+
+impl ToNapiValue for DateTime<Utc> {
+  unsafe fn to_napi_value(env: sys::napi_env, val: DateTime<Utc>) -> Result<sys::napi_value> {
+    let mut ptr = std::ptr::null_mut();
+    let millis_since_epoch_utc = val.timestamp_millis() as f64;
+
+    check_status!(
+      unsafe { sys::napi_create_date(env, millis_since_epoch_utc, &mut ptr) },
+      "Failed to convert rust type `DateTime<Utc>` into napi value",
+    )?;
+
+    Ok(ptr)
+  }
+}
+
+impl FromNapiValue for DateTime<Utc> {
+  unsafe fn from_napi_value(env: sys::napi_env, napi_val: sys::napi_value) -> Result<Self> {
+    let mut milliseconds_since_epoch_utc = 0.0;
+
+    check_status!(
+      unsafe { sys::napi_get_date_value(env, napi_val, &mut milliseconds_since_epoch_utc) },
+      "Failed to convert napi value into rust type `DateTime<Utc>`",
+    )?;
+
+    let milliseconds_since_epoch_utc = milliseconds_since_epoch_utc as i64;
+    let timestamp_seconds = milliseconds_since_epoch_utc / 1_000;
+    let naive = NaiveDateTime::from_timestamp_opt(
+      timestamp_seconds,
+      (milliseconds_since_epoch_utc % 1_000 * 1_000_000) as u32,
+    )
+    .ok_or_else(|| Error::new(Status::DateExpected, "Found invalid date".to_owned()))?;
+    Ok(DateTime::<Utc>::from_utc(naive, Utc))
+  }
+}

examples/napi/Cargo.toml

@@ -9,12 +9,22 @@ version = "0.1.0"
 crate-type = ["cdylib"]
 
 [dependencies]
+chrono = "0.4"
 futures = "0.3"
-napi = {path = "../../crates/napi", default-features = false, features = ["tokio_fs", "napi8", "tokio_rt", "serde-json", "async", "experimental", "latin1"]}
-napi-derive = {path = "../../crates/macro", features = ["type-def"]}
+napi = { path = "../../crates/napi", default-features = false, features = [
+    "tokio_fs",
+    "napi8",
+    "tokio_rt",
+    "serde-json",
+    "async",
+    "experimental",
+    "latin1",
+    "chrono_date",
+] }
+napi-derive = { path = "../../crates/macro", features = ["type-def"] }
 serde = "1"
 serde_derive = "1"
 serde_json = "1"
 
 [build-dependencies]
-napi-build = {path = "../../crates/build"}
+napi-build = { path = "../../crates/build" }

examples/napi/__test__/typegen.spec.ts.md

@@ -41,6 +41,8 @@ Generated by [AVA](https://avajs.dev).
     export function readFile(callback: (arg0: Error | undefined, arg1?: string | undefined | null) => void): void␊
     export function returnJsFunction(): (...args: any[]) => any␊
     export function dateToNumber(input: Date): number␊
+    export function chronoDateToMillis(input: Date): number␊
+    export function chronoDateAdd1Minute(input: Date): Date␊
     export function eitherStringOrNumber(input: string | number): number␊
     export function returnEither(input: number): string | number␊
     export function either3(input: string | number | boolean): number␊

examples/napi/__test__/values.spec.ts

@@ -83,7 +83,9 @@ import {
   testSerdeRoundtrip,
   createObjWithProperty,
   dateToNumber,
+  chronoDateToMillis,
   derefUint8Array,
+  chronoDateAdd1Minute,
 } from '../'
 
 test('export const', (t) => {
@@ -564,3 +566,12 @@ Napi5Test('Date test', (t) => {
   const fixture = new Date('2016-12-24')
   t.is(dateToNumber(fixture), fixture.valueOf())
 })
+
+Napi5Test('Date to chrono test', (t) => {
+  const fixture = new Date('2022-02-09T19:31:55.396Z')
+  t.is(chronoDateToMillis(fixture), fixture.getTime())
+  t.deepEqual(
+    chronoDateAdd1Minute(fixture),
+    new Date(fixture.getTime() + 60 * 1000),
+  )
+})

examples/napi/index.d.ts

@@ -31,6 +31,8 @@ export function optionOnly(callback: (arg0?: string | undefined | null) => void)
 export function readFile(callback: (arg0: Error | undefined, arg1?: string | undefined | null) => void): void
 export function returnJsFunction(): (...args: any[]) => any
 export function dateToNumber(input: Date): number
+export function chronoDateToMillis(input: Date): number
+export function chronoDateAdd1Minute(input: Date): Date
 export function eitherStringOrNumber(input: string | number): number
 export function returnEither(input: number): string | number
 export function either3(input: string | number | boolean): number

examples/napi/src/date.rs

@@ -1,6 +1,17 @@
+use chrono::{Duration, Utc};
 use napi::bindgen_prelude::*;
 
 #[napi]
 fn date_to_number(input: Date) -> Result<f64> {
   input.value_of()
 }
+
+#[napi]
+fn chrono_date_to_millis(input: chrono::DateTime<Utc>) -> i64 {
+  input.timestamp_millis()
+}
+
+#[napi]
+fn chrono_date_add_1_minute(input: chrono::DateTime<Utc>) -> chrono::DateTime<Utc> {
+  input + Duration::minutes(1)
+}