I have a typescript function, with multiple arguments, I would like to call with a single string. E.g.
fn(a: string, b: number, c: boolean) {...}
For example, suppose I have
let str: string = "a: 'A', b: 5, c: false";
Is there are a way (short of parsing this string) to call the function directly? Obviously just the call
let result = fn(str)
does not work.
Is there are a way (short of parsing this string) to call the function directly?
Short answer:
Nope.
Longer answer:
Javascript does not provide a good way to encode function and argument lists as strings.
You need to encode that data somehow as a string, and then decode that data into the right format to use the data it contains. You could encode it as JSON for instance:
const json = '{ "a": "A", "b": 5, "c": false }'
const { a, b, c } = JSON.parse(json)
fn(a, b, c)
But this means encoding/decoding that string according to your custom logic, which you said you don't want to do.
Bad answer:
Use eval:
const myEvilStr = "fn('A', 5, false)"
eval(myEvilStr)
This is interesting academically, but uh, yeah, don't do that. Ever.
Some reading on why not to do this, in case I haven't sold it:
JSON.parsethe string. Probably use an array instead of an object.