Introduce a static fromNumber function to enable JavaScript sending D…

…ecimal objects across the boundary

README.md

@@ -301,7 +301,8 @@ libraries, this crate can be compiled with `--no-default-features`.
 ### `wasm-bindgen`
 
 Enable [`wasm-bindgen`](https://github.com/rustwasm/wasm-bindgen) support which makes `Decimal` compatible with the
-`wasm_bindgen` attribute macro and exposes a `toNumber()` method for use in JavaScript.
+`wasm_bindgen` attribute macro and exposes `fromNumber()` and `toNumber()` methods to convert between `Decimal` and
+the primitive `number` type across boundaries.
 
 ## Building
 

src/wasm.rs

@@ -1,10 +1,17 @@
-use num_traits::ToPrimitive;
+use num_traits::{FromPrimitive, ToPrimitive};
 use wasm_bindgen::prelude::wasm_bindgen;
 
 use crate::Decimal;
 
 #[wasm_bindgen]
 impl Decimal {
+    /// Returns a new `Decimal` object instance by converting a primitive number.
+    #[wasm_bindgen(js_name = fromNumber)]
+    #[must_use]
+    pub fn from_number(value: f64) -> Option<Decimal> {
+        Decimal::from_f64(value)
+    }
+
     /// Returns the value of this `Decimal` converted to a primitive number.
     #[wasm_bindgen(js_name = toNumber)]
     #[must_use]