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Show the JSON parse-error message on the Variable form warning - #71780
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The Variables form warns "Invalid JSON" the moment the value looks
like it might be JSON but doesn't parse. That warning tells the user
something's wrong but not where, so a typo halfway through a large
value is still a hunt.
The browser's SyntaxError from JSON.parse already carries the position
("Unexpected token ',' at position 42 (line 3 column 12)" on V8,
similar on Firefox / Safari). Surface it alongside the localized label
so users can jump straight to the character that broke the parse.
The parser message is emitted by the JS engine and is only ever in
English — mixing it with a localized label is a compromise, but the
position info is more valuable than perfect localization here, and no
browser offers a localized JSON parse error to begin with.
closes: apache#68262
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pierrejeambrun
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Aug 21, 2026
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Backport successfully created: v3-3-testNote: As of Merging PRs targeted for Airflow 3.X In matter of doubt please ask in #release-management Slack channel.
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Aug 21, 2026
… warning (apache#71780) The Variables form warns "Invalid JSON" the moment the value looks like it might be JSON but doesn't parse. That warning tells the user something's wrong but not where, so a typo halfway through a large value is still a hunt. The browser's SyntaxError from JSON.parse already carries the position ("Unexpected token ',' at position 42 (line 3 column 12)" on V8, similar on Firefox / Safari). Surface it alongside the localized label so users can jump straight to the character that broke the parse. The parser message is emitted by the JS engine and is only ever in English — mixing it with a localized label is a compromise, but the position info is more valuable than perfect localization here, and no browser offers a localized JSON parse error to begin with. (cherry picked from commit b5b39cc) Co-authored-by: Pierre Jeambrun <pierrejbrun@gmail.com> closes: apache#68262
aws-airflow-bot
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Aug 21, 2026
… warning (apache#71780) The Variables form warns "Invalid JSON" the moment the value looks like it might be JSON but doesn't parse. That warning tells the user something's wrong but not where, so a typo halfway through a large value is still a hunt. The browser's SyntaxError from JSON.parse already carries the position ("Unexpected token ',' at position 42 (line 3 column 12)" on V8, similar on Firefox / Safari). Surface it alongside the localized label so users can jump straight to the character that broke the parse. The parser message is emitted by the JS engine and is only ever in English — mixing it with a localized label is a compromise, but the position info is more valuable than perfect localization here, and no browser offers a localized JSON parse error to begin with. (cherry picked from commit b5b39cc) Co-authored-by: Pierre Jeambrun <pierrejbrun@gmail.com> closes: apache#68262
bbovenzi
pushed a commit
that referenced
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Aug 24, 2026
… warning (#71780) (#71953) The Variables form warns "Invalid JSON" the moment the value looks like it might be JSON but doesn't parse. That warning tells the user something's wrong but not where, so a typo halfway through a large value is still a hunt. The browser's SyntaxError from JSON.parse already carries the position ("Unexpected token ',' at position 42 (line 3 column 12)" on V8, similar on Firefox / Safari). Surface it alongside the localized label so users can jump straight to the character that broke the parse. The parser message is emitted by the JS engine and is only ever in English — mixing it with a localized label is a compromise, but the position info is more valuable than perfect localization here, and no browser offers a localized JSON parse error to begin with. (cherry picked from commit b5b39cc) closes: #68262 Co-authored-by: Pierre Jeambrun <pierrejbrun@gmail.com>
vatsrahul1001
pushed a commit
that referenced
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Sep 7, 2026
… warning (#71780) (#71953) The Variables form warns "Invalid JSON" the moment the value looks like it might be JSON but doesn't parse. That warning tells the user something's wrong but not where, so a typo halfway through a large value is still a hunt. The browser's SyntaxError from JSON.parse already carries the position ("Unexpected token ',' at position 42 (line 3 column 12)" on V8, similar on Firefox / Safari). Surface it alongside the localized label so users can jump straight to the character that broke the parse. The parser message is emitted by the JS engine and is only ever in English — mixing it with a localized label is a compromise, but the position info is more valuable than perfect localization here, and no browser offers a localized JSON parse error to begin with. (cherry picked from commit b5b39cc) closes: #68262 Co-authored-by: Pierre Jeambrun <pierrejbrun@gmail.com>
imrichardwu
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to imrichardwu/airflow
that referenced
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Sep 11, 2026
…ache#71780) The Variables form warns "Invalid JSON" the moment the value looks like it might be JSON but doesn't parse. That warning tells the user something's wrong but not where, so a typo halfway through a large value is still a hunt. The browser's SyntaxError from JSON.parse already carries the position ("Unexpected token ',' at position 42 (line 3 column 12)" on V8, similar on Firefox / Safari). Surface it alongside the localized label so users can jump straight to the character that broke the parse. The parser message is emitted by the JS engine and is only ever in English — mixing it with a localized label is a compromise, but the position info is more valuable than perfect localization here, and no browser offers a localized JSON parse error to begin with. closes: apache#68262
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The Variables form warns "Invalid JSON" the moment the value looks like it might be JSON but doesn't parse. That warning tells the user something's wrong but not where, so a typo halfway through a large value is still a hunt.
The browser's
SyntaxErrorfromJSON.parsealready carries the position ("Unexpected token ',' at position 42 (line 3 column 12)"on V8; similar on Firefox / Safari). Surface it alongside the localized label so users can jump straight to the character that broke the parse.Caveat worth naming up front. The parser message is emitted by the JS engine and is only ever in English — mixing it with a localized label is a compromise. The position info is more valuable than perfect localization here IMO, and no browser offers a localized JSON parse error to begin with. Alternative would be a dependency like
jsonc-parserfor a cross-browser structured error, which is ~30KB and specific code for a UI hint.Existing test cases (Jinja template
{{ var.value.x }}, bracket-prefixed plain string[DRAFT] ..., malformed object with trailing comma) still hit the same warning path — just with a browser-provided detail message now. Updated thegetByTextassertions to a regex so they don't depend on the exact detail suffix, which varies by browser.closes: #68262
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