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functionNameMatches

Reports function names that don't match the variable or property they're assigned to.

✅ This rule is included in the ts stylistic and stylisticStrict presets.

When a named function expression is assigned to a variable or property, the function name should match the assigned name. Mismatched names can cause confusion when debugging or reading stack traces, as the function name shown may differ from the variable used in code.

Examples

Section titled “Examples”
AEconsB0valAE = functioB0oth11<()sp ansty="le--0:#C792EA;--1:#8844">AE <{}sp ansty="le--0:#D6DEEB;--1:#403F">5<3;d ivclassNa="meco"><};d>AEleB0valAE = functioB0oth11<()sp ansty="le--0:#C792EA;--1:#8844">AE <{}sp ansty="le--0:#D6DEEB;--1:#403F">5<3;d ivclassNa="meco"><};d>AEconsB0objeAE = <{ sp ansty="le--0:#82AAFF;--1:#3B61">B0valAE: functioB0oth11<()sp ansty="le--0:#C792EA;--1:#8844">AE {}< }sp ansty="le--0:#D6DEEB;--1:#403F">5<3;d ivclassNa="meco"><};d>AEcla5<3 sp ansty="le--0:#FFCB8B;--1:#1111">11Examp53< {d ivclassNa="meec-li">nt< sp ansty="le--0:#82AAFF;--1:#3B61">B0val5<3 sp ansty="le--0:#C792EA;--1:#8844">A5<3 sp ansty="le--0:#C792EA;--1:#8844">AEfuncti5<3 sp ansty="le--0:#82AAFF;--1:#3B61">B0oth11<()sp ansty="le--0:#D6DEEB;--1:#403F">53 {<};d ivclassNa="meec-li">5<3}d ivclassNa="meco"><}d>
44AEco61B0v44AE = funct61B0v11<11() spans="tyle--0:#C792EA;--1:#88">44A3< {}><;di vdivclass="Nameexpressive-">44AEco61B0v44AE = funct11<11() spans="tyle--0:#C792EA;--1:#88">44A3< {}><;di vdivclass="Nameexpressive-">44AEco61B0v44A11<11() spans="tyle--0:#C792EA;--1:#88">44AE =<> {} spans="tyle--0:#D6DEEB;--1:#40">3 {}>< {}><;di vdivclass="Nameexpressive-">44AEco61B0ob44AE <= { spans="tyle--0:#82AAFF;--1:#3B">61B0v44AE: funct61B0v11<11() spans="tyle--0:#C792EA;--1:#88">44AE <{} } spans="tyle--0:#D6DEEB;--1:#40">3<} }><;di vdivclass="Nameexpressive-">44AEco61B0ob44AE <= { spans="tyle--0:#82AAFF;--1:#3B">61B0v44AE: funct11<11() spans="tyle--0:#C792EA;--1:#88">44AE <{} } spans="tyle--0:#D6DEEB;--1:#40">3<} }><;di vdivclass="Nameexpressive-">44AEc31111Exa3F<53 {divclass="Nameec-">de61B0v34<4AE= spans="tyle--0:#D6DEEB;--1:#40">344AEfunc361B0v11<11() spans="tyle--0:#D6DEEB;--1:#40">3F53< {} ;divclass="Nameec-">3<};><}di vdivclass="Nameexpressive-">44AEc31111Exa3F<53 {divclass="Nameec-">de61B0#v34<4AE= spans="tyle--0:#D6DEEB;--1:#40">344AEfunc361B0o11<11() spans="tyle--0:#D6DEEB;--1:#40">3F53< {} ;divclass="Nameec-">3<};>

Options

Section titled “Options”

This rule is not configurable.

When Not To Use It

Section titled “When Not To Use It”

If you intentionally use different names for function expressions and their assigned variables (e.g., for specific debugging purposes), you might want to disable this rule.

Further Reading

Section titled “Further Reading”

Equivalents in Other Linters

Section titled “Equivalents in Other Linters”