奇数（在承诺中）typeError：可以将50057转换为bigint”。 WebAssembly的错误
我正在尝试与WebAssembly进行交互，并遇到一个奇怪的错误。 Firefox DevTools显示如下：Untured（在承诺中）TypeError：无法将50057转换为Bigint
在此错误发生之前直接运行的代码：
static read_int(descriptor: number): number {
console.log("read_int")
if (descriptor < 0) {
return -1;
}
let value = Wasm.readStdValue(descriptor);
if (typeof value === 'number') {
if (Number.isInteger(value)) {
return value;
}
return Math.floor(value);
}
if (typeof value === 'boolean') {
return value ? 1 : 0;
}
if (typeof value === 'string') {
return parseInt(value);
}
return -1;
}
此处使用的WebAssembly文件最初是在与Swift和称为WasmInterPreter的库接口中使用的，因此Disciptror只是一个数字，它是一个密钥在地图中。以LET value = wastm.ReadStdValue（Descriptor）;行读取的数字为50057，它是numbern。对我来说，这似乎是不对的，它不会将这么小的数字转换为更大的数字类型，而是IDK。
提前致谢！
I am trying to interface with WebAssembly and am getting a weird error. Firefox DevTools shows it as follows:Uncaught (in promise) TypeError: can't convert 50057 to BigInt
The code that runs right before this error occurs:
static read_int(descriptor: number): number {
console.log("read_int")
if (descriptor < 0) {
return -1;
}
let value = Wasm.readStdValue(descriptor);
if (typeof value === 'number') {
if (Number.isInteger(value)) {
return value;
}
return Math.floor(value);
}
if (typeof value === 'boolean') {
return value ? 1 : 0;
}
if (typeof value === 'string') {
return parseInt(value);
}
return -1;
}
The WebAssembly files being used here were originally being used in a system interfacing with Swift and a library called WasmInterpreter, so the descriptor is just a number which is a key in a map. The number being read at the let value = Wasm.readStdValue(descriptor); line is 50057 and it is a number. It doesn't seem right to me that it would fail to convert such a small number to a larger number type but idk.
Thanks in advance!
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我想您正在调用
i64参数的WASM函数。当Wasm期望i64时，JavaScript需要提供bigint。甚至0将被隐式转换为0N。您可以将bigint构造函数用作转换函数，例如if（typeof value ==='number'）{return bigint（value）; }。IOW，调用使用
i64的WASM函数的要求与将元素写入bigint64array：使用Bigint Works，字符串，弦乐甚至布尔值都会被隐式转换（因此，您的辅助功能的那些部分是不必要的），传递数字会抛出typeError。（我个人同意这很愚蠢，但规格就是它。）
I guess you're calling a Wasm function that takes an
i64parameter. When Wasm expects ani64, then JavaScript needs to provide a BigInt. Not even0will be converted to0nimplicitly. You can use theBigIntconstructor as a conversion function, e.g.if (typeof value === 'number') { return BigInt(value); }.IOW, calling a Wasm function that takes an
i64has the same requirements as writing an element into aBigInt64Array: Using a BigInt works, strings and even booleans will be converted implicitly (so those parts of your helper function are unnecessary), passing a Number throws a TypeError.(Personally I agree that this is silly, but the spec is what it is.)