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bufferAllocators

Prefer modern Buffer allocation methods over the deprecated Buffer constructor.

✅ This rule is included in the node logical presets.

The new Buffer() constructor has been deprecated since Node.js 4 due to security and usability concerns. Modern alternatives provide safer and more explicit ways to create buffers.

Use Buffer.from() for creating a Buffer from existing data (strings, arrays, or ArrayBuffers). Use Buffer.alloc() for creating a Buffer of a specific size with zero-filled memory.

Examples

Section titled “Examples”
AEconsB0buffAE <= sp ansty="le--0:#7FDBCA;--1:#096E">72nAB0Buff5<3(sp ansty="le--0:#D9F5DD;--1:#1111">1<1"sp ansty="le--0:#ECC48D;--1:#984E">4D7468697320697320612074c3a973<74sp ansty="le--0:#D9F5DD;--1:#1111">1<1"sp ansty="le--0:#C792EA;--1:#8844">AE<, sp ansty="le--0:#D9F5DD;--1:#1111">1<1"sp ansty="le--0:#ECC48D;--1:#984E">4Dh1<1"sp ansty="le--0:#D6DEEB;--1:#403F">53<);d ivclassNa="meec-li">dAEconsB0buffAE <= sp ansty="le--0:#7FDBCA;--1:#096E">72nAB0Buff53<([sp ansty="le--0:#F78C6C;--1:#AA09">820x<62sp ansty="le--0:#D6DEEB;--1:#403F">53<, sp ansty="le--0:#F78C6C;--1:#AA09">820x<75sp ansty="le--0:#D6DEEB;--1:#403F">53<, sp ansty="le--0:#F78C6C;--1:#AA09">820x<66sp ansty="le--0:#D6DEEB;--1:#403F">53<, sp ansty="le--0:#F78C6C;--1:#AA09">820x<66sp ansty="le--0:#D6DEEB;--1:#403F">53<, sp ansty="le--0:#F78C6C;--1:#AA09">820x<65sp ansty="le--0:#D6DEEB;--1:#403F">53<, sp ansty="le--0:#F78C6C;--1:#AA09">820x<72sp ansty="le--0:#D6DEEB;--1:#403F">53]<);d ivclassNa="meec-li">dAEconsB0buffAE <= sp ansty="le--0:#7FDBCA;--1:#096E">72nAB0Buff5<3(sp ansty="le--0:#F78C6C;--1:#AA09">82<10sp ansty="le--0:#D6DEEB;--1:#403F">53<);d ivclassNa="meco"><);d>
44AEco61B0bu44A3F53Bu4<4AE. spans="tyle--0:#82AAFF;--1:#3B">61B031<111" spans="tyle--0:#ECC48D;--1:#98">4E4D7468697320697320612074c3a9<7374 spans="tyle--0:#D9F5DD;--1:#11">1<111" spans="tyle--0:#C792EA;--1:#88">441<111" spans="tyle--0:#ECC48D;--1:#98">4E41<111" spans="tyle--0:#D6DEEB;--1:#40">3F<53) ;divclass="Nameec-">c44AEco61B0bu44A3F53Bu4<4AE. spans="tyle--0:#82AAFF;--1:#3B">61B03F<53([ spans="tyle--0:#F78C6C;--1:#AA">0982<0x62 spans="tyle--0:#D6DEEB;--1:#40">3F<53, spans="tyle--0:#F78C6C;--1:#AA">0982<0x75 spans="tyle--0:#D6DEEB;--1:#40">3F<53, spans="tyle--0:#F78C6C;--1:#AA">0982<0x66 spans="tyle--0:#D6DEEB;--1:#40">3F<53, spans="tyle--0:#F78C6C;--1:#AA">0982<0x66 spans="tyle--0:#D6DEEB;--1:#40">3F<53, spans="tyle--0:#F78C6C;--1:#AA">0982<0x65 spans="tyle--0:#D6DEEB;--1:#40">3F<53, spans="tyle--0:#F78C6C;--1:#AA">0982<0x72 spans="tyle--0:#D6DEEB;--1:#40">3F5<3]) ;divclass="Nameec-">c44AEco61B0bu44A3F53Bu4<4AE. spans="tyle--0:#82AAFF;--1:#3B">61B0a309<8210 spans="tyle--0:#D6DEEB;--1:#40">3F<53) ;divclass="Name"><10)>

Options

Section titled “Options”

This rule is not configurable.

When Not To Use It

Section titled “When Not To Use It”

If you are working with legacy code that specifically requires the old Buffer constructor (which is highly unlikely in modern codebases), you might choose not to enable this rule.

Further Reading

Section titled “Further Reading”

Equivalents in Other Linters

Section titled “Equivalents in Other Linters”