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Having a boolean as a value gives a "TypeError: res.match is not a function" (from v20 to v21) #1702

afv opened this issue Dec 7, 2021 · 2 comments


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@afv afv commented Dec 7, 2021

馃悰 Bug Report

From v20 (20.6.1) to v21 (21.0.0) having a boolean as a value gives a TypeError: res.match is not a function at Translator.extendTranslation (webpack-internal:///./node_modules/i18next/dist/esm/i18next.js:835:24), as res is a boolean and not a String.

Part of extendTranslation:

if (skipOnVariables) {
  var nb = res.match(this.interpolator.nestingRegexp);
  nestBef = nb && nb.length;

To Reproduce

"paragraphs": {
  "paragraphOne": {
    "text": "some example text to be highlighted",
    "highlight": true
  "paragraphTwo": {
    "text": "text not highlighted",
    "highlight": false

I'm using returnObjects: true to get the paragraphs object (from the example) and iterate through the results (paragraphOne and paragraphTwo) in the template (Vue). I then use the highlight boolean to know if a CSS class should be applied to that text or not (is there a better way?).

Expected behavior

No error. res typeof should be checked and if it is not a String it should not call match.

To "fix" it I just replaced true by "true" and will check for that string instead of expecting a boolean, but I'm opening this issue anyway as it might be a bug.

Your Environment

  • i18next version: 21.5.4
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@adrai adrai commented Dec 7, 2021

should be fixed with v21.5.5

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@afv afv commented Dec 7, 2021

Confirmed. Thanks for the quick fix! 馃槂

@afv afv closed this as completed Dec 7, 2021
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