11

I am using the following code.

const body = /<body.*?>([\s\S]*)<\/body>/.exec(html)[1];

It compiles with the error below.

Object is possibly 'null'.ts(2531).

How can I fix it?

nyedidikeke
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Harish
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    Check for a match first, before accessing the match results. This regex will cause issues if the text you match does not contain `

    ` tag and the text is large enough, BTW. And it will never match `

    ` tag that contains line breaks in between attributes. That is why regex is not a good idea when parsing HTML.     – Wiktor Stribiżew Aug 24 '17 at 07:37
  • Look here https://stackoverflow.com/questions/40349987/how-to-suppress-typescript-error-ts2533-object-is-possibly-null-or-undefine – Piero Alberto Aug 24 '17 at 07:43
  • Thanks @PieroAlberto – Harish Aug 24 '17 at 10:46

2 Answers2

30

I am able to solve this question using non-null assertion operator ! as below

const body = /<body.*?>([\s\S]*)<\/body>/.exec(html)![1];
Harish
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2

If you don't want to use the ! operator, one other option could be to use the optional operator ? and use a default value.

const body = /<body.*?>([\s\S]*)<\/body>/.exec(html)?[1] ?? '';
user023
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