typescript - Not able to parse text correctly to string using fast-xml-parser, instead getting parsed as number - Stack Overflow

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I am trying to parse below xml using fast-xml-parser and typescript code. I see that when the value contains a hyphen, it is being treated as string in the output. But when the value looks like plain number, output is not in string format. I need this to be handled in a way that any value coming inside of type=text should be parsed as string. In the given example 789555 should be coming as string similar to 123-456. I went through the doc and tried few steps with tagValueProcessor but did not give the intended result. I do not want to alter format of any other attribute except for the mentioned condition. Any suggestion would be helpful.

private xmlParser = new XMLParser({
        ignoreAttributes: false,
        attributeNamePrefix: '',
        removeNSPrefix: true,
        commentPropName: '#comment'
    })
xmlParser.parse(requestxml)

Input

<u5:items>
        <u5:item name="amz.myid">
            <u6:values>
                <u6:value type="Text" isNegative="false">123-456</u6:value>
                <u6:value type="Text" isNegative="false">789555</u6:value>
            </u6:values>
        </u5:item>
</u5:items>

Actual output

{
    "items": {
        "item": {
            "values": {
                "value": [
                    {
                        "#text": "123-456",
                        "type": "Text",
                        "isNegative": "false"
                    },
                    {
                        "#text": 789555, //this needs to be a string
                        "type": "Text",
                        "isNegative": "false"
                    }
                ],
                "#text": "/u6:values>"
            },
            "name": "amz.myid"
        }
    }
}

Expected Output

{
    "items": {
        "item": {
            "values": {
                "value": [
                    {
                        "#text": "123-456",
                        "type": "Text",
                        "isNegative": "false"
                    },
                    {
                        "#text": "789555",
                        "type": "Text",
                        "isNegative": "false"
                    }
                ],
                "#text": "/u6:values>"
            },
            "name": "amz.myid"
        }
    }
}

I am trying to parse below xml using fast-xml-parser and typescript code. I see that when the value contains a hyphen, it is being treated as string in the output. But when the value looks like plain number, output is not in string format. I need this to be handled in a way that any value coming inside of type=text should be parsed as string. In the given example 789555 should be coming as string similar to 123-456. I went through the doc and tried few steps with tagValueProcessor but did not give the intended result. I do not want to alter format of any other attribute except for the mentioned condition. Any suggestion would be helpful.

private xmlParser = new XMLParser({
        ignoreAttributes: false,
        attributeNamePrefix: '',
        removeNSPrefix: true,
        commentPropName: '#comment'
    })
xmlParser.parse(requestxml)

Input

<u5:items>
        <u5:item name="amz.myid">
            <u6:values>
                <u6:value type="Text" isNegative="false">123-456</u6:value>
                <u6:value type="Text" isNegative="false">789555</u6:value>
            </u6:values>
        </u5:item>
</u5:items>

Actual output

{
    "items": {
        "item": {
            "values": {
                "value": [
                    {
                        "#text": "123-456",
                        "type": "Text",
                        "isNegative": "false"
                    },
                    {
                        "#text": 789555, //this needs to be a string
                        "type": "Text",
                        "isNegative": "false"
                    }
                ],
                "#text": "/u6:values>"
            },
            "name": "amz.myid"
        }
    }
}

Expected Output

{
    "items": {
        "item": {
            "values": {
                "value": [
                    {
                        "#text": "123-456",
                        "type": "Text",
                        "isNegative": "false"
                    },
                    {
                        "#text": "789555",
                        "type": "Text",
                        "isNegative": "false"
                    }
                ],
                "#text": "/u6:values>"
            },
            "name": "amz.myid"
        }
    }
}

• typescript
• xml
• parsing
• fast-xml-parser

Share Improve this question Follow asked yesterday Pavan KumarPavan Kumar 1551111 bronze badges 2

• What version of fast-xml-parser are you using? – Matt Kantor Commented yesterday
• You can use the parser option alwaysCreateTextNode: true – Hermann12 Commented 1 hour ago

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1 Answer 1

Sorted by: Reset to default 0

Assuming you are using a recent version of fast-xml-parser, you can set the parseTagValue option to false to disable number parsing for tag values.

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