Failed to run in SES

[Jack-Works]

https://github.com/MikeMcl/decimal.js-light/blob/master/decimal.js#L1862

Change this line to

Object.defineProperty(this, 'constructor', {
    value: Decimal
})

can fix the problem, but this looks like a compiled file, I don't know how to make a PR

[MikeMcl]

What is SES?

In JavaScript, constructor is not a read-only property of an object, and this is an ECMAScript 3 compatible library, so Object.defineProperty is unacceptable anyway.

[Jack-Works]

Hi! SES is a secured EcmaScript environment (and it's polyfill), in that environment, every built-in object (including Function.prototype) is frozen to protect from the prototype pollution attack.

When Function.prototype is not frozen, set on Decimal.constructor will not change the Function.prototype.constructor, but create a defined property:

But very unluck, when the prototype is frozen, write the property without Object.defineProperty will throw an error:

and this is an ECMAScript 3 compatible library, so Object.defineProperty is unacceptable anyway.

Is it possible to do this?

if (Object.defineProperty) Object.defineProperty(this, 'constructor', { value: Decimal })
else this.constructor = Decimal

[MikeMcl]

Is this the only change required to make this library SES-compatible?

Anyway, this is a very hot code path and adding another if statement and then calling Object.defineProperty will be much slower then the existing simple assignment.

SES and similar efforts look interesting but they seem too marginal at the moment for me to start making changes to support them.

[Jack-Works]

Is this the only change required to make this library SES-compatible?

Maybe not, it is just the first error that appears, maybe some other assignments need to be changed too.

SES and similar efforts look interesting but they seem too marginal at the moment for me to start making changes to support them.

Thanks for your reply, maybe I will choose to patch the package in the node_modules to fix the problem.