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A malicious npm package targets Solana developers, rerouting funds in 2% of transactions to a hardcoded address.
simple-eval
Advanced tools
Simple JavaScript expression evaluator.
yarn add simple-eval
or if npm is package manager of your choice
npm install simple-eval --save
import simpleEval from 'simple-eval';
simpleEval('2 + 4 * 10 + -4'); // 38
simpleEval('Math.floor(Math.PI * 10)'); // exception
simpleEval('Math.floor(Math.PI * 10)', { Math }); // 31, works because we provided Math
simpleEval('foo.bar.baz ? 10 : Math.random()', {
Math,
foo: {
bar: {
baz: false,
}
}
}); // some random number, as returned by Math.random()
By default, simple-eval
uses jsep
,
but you're free to use any ESTree compliant parser such as acorn
, @babel/parser
, or esprima
.
Although a number of use cases is supported, do note that this library does not aim to be a drop-in replacement for eval
.
By supporting a limited set of instructions, it's arguably safer than eval
, albeit it's still not supposed to be used instead of proper sandbox.
In particular, all kind of declarations and assignments are prohibited.
FAQs
Simple JavaScript expression evaluator
The npm package simple-eval receives a total of 569,900 weekly downloads. As such, simple-eval popularity was classified as popular.
We found that simple-eval demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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