JavaScript A function that converts a two-dimensional array to CSV

[Polli]

hello, please help. I need to write a function that converts a two-dimensional array to CSV format and returns a string. Valid values as array elements are numbers and strings. If a function is encountered, throw an error with the text “Unexpected value”. Example:

arraysToCsv([[1, 2], ['a', 'b']]) // '1,2
a,b'
arraysToCsv([[1, 2], ['a,b', 'c,d']]) // '1,2
"a,b","c,d"'

 

[Antero360]

hello, please help. I need to write a function that converts a two-dimensional array to CSV format and returns a string. Valid values as array elements are numbers and strings. If a function is encountered, throw an error with the text “Unexpected value”. Example:

arraysToCsv([[1, 2], ['a', 'b']]) // '1,2
a,b'
arraysToCsv([[1, 2], ['a,b', 'c,d']]) // '1,2
"a,b","c,d"'

Hi there,
Did you already attempt this on your own, and get stuck somewhere?

 

[Polli]

Hi there,
Did you already attempt this on your own, and get stuck somewhere?

Hi! Yeh...
i tried to do it like this:

function func(arr) {
return arr
    .map(array => array.map(e => {
        let type = typeof e;
        if (type !== "number" && type !== "string")
            throw new Error("Unexpected value");
        return (type === "string" && e.includes(",")) ? JSON.stringify(e) : e;
    }).join(","))
    .join("\n");
}

I did this, the test "correctly escapes quotes" fails:

Expected: """"text""","other ""long"" text""
Received: ""text",other "long" text"