v1.4.0

Minor Release

tl;dr

• Massive performance improvement over 1.3.x with tiny change to isValidating and smarter internal orchestration of validation
• Treeshaking thanks to @TrySound

About that #perf boost...

In 1.4.x isValidating will only now toggle during submission and if you manually call validateForm, otherwise it will remain false. In the past, it toggled on change and blur which caused a performance regression with certain libraries (like styled-components). Additionally, Formik internally runs validation slightly more intelligently: it will now cancel a running validation promise if a newer one is executed prior to committing the update. This can save lots and lots of renders.

Commits

• Update yarn.lock for react-fast-compare v2 d02beb8
• upgrade react-fast-compare to get bugfix (#1149) f5c6a43
• Only use isValidating during submit (#1169) 2ae0537
• Make validateForm internally cancellable (#1163) 32a69be
• Stricter typing for FormikActions resetForm method (#1166) 109324a
• Correct Field render props docs example (#1167) c5e7b18
• Correct docs examples (#1162) 13a1e12
• Remove warnings from production bundle (#1161) 731d13e
• Replace lodash.package with lodash/package (#1160) 3588f4a
• Set displayName on connected component. (#1152) 356a728
• Remove extra “the” (#1147) fbed327
• Add working with React Select v2 example (#1130) fa2ca38
• Update tutorial.md (#1128) 5779f59
• [ImgBot] Optimize images (#1142) 2802d7b
• Update validation.md (#1123) 0cc611a
• Update React, @types/react, typescript 85d15b3
• Bump react and react-dom devDeps 6526200
• Remove enzyme from FieldArray test ace898c
• Changed FieldArray.updateArrayField to use prevState (#1059) ddf1bef
• Bump docs to 1.3.2 a250d6a
• v1.3.2 82f45bf
• New size snap 784d803

Update on Formik v2

Formik v2 is coming very soon (#1063)!!! We'll start to publish canary releases next week. Stay tuned!