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bluebird eval in toFastProperties triggers SyntaxError

See original GitHub issue

I’m trying to use lavamoat with the plaid API, which uses bluebird. I can imagine bluebird does some sort of monkey-patching that doesn’t mesh well with lavamoat. Any advice on how to proceed?

To reproduce the issue, I used lavamoat-browserify-examples/00-simple-cli with a small tweak:

add-bluebird.patch.txt

When I npm install; npm start and load the page in my browser, I get some diagnostics that I struggle to make sense of:

internalRequire:551 LavaMoat - Error evaluating module "2" from package "bluebird"
internalRequire @ internalRequire:551
requireRelative @ internalRequire:638
requireRelativeWithContext @ internalRequire:605
eval @ VM318:2
internalRequire @ internalRequire:586
loadBundle @ internalRequire:3976
(anonymous) @ internalRequire:4658
internalRequire:588 LavaMoat - Error instantiating module "1" from package "<root>"
internalRequire @ internalRequire:588
loadBundle @ internalRequire:3976
(anonymous) @ internalRequire:4658
internalRequire:589 Uncaught SyntaxError: possible direct eval expression rejected around line 5561
    at rejectSomeDirectEvalExpressions (internalRequire:1258)
    at rejectDangerousSources (internalRequire:1267)
    at Object.rewrite (internalRequire:1273)
    at eval (eval at createSafeEvaluatorFactory (bundle.js:1337), <anonymous>:19:57)
    at Array.reduce (<anonymous>)
    at eval (eval at createSafeEvaluatorFactory (bundle.js:1337), <anonymous>:4:53)
    at applyTransforms (eval at createSafeEvaluatorFactory (bundle.js:1337), <anonymous>:17:21)
    at safeEvalOperation (internalRequire:1353)
    at internalRequire:1425
    at realmEvaluate (internalRequire:1650)
callAndWrapError @ VM268:79
evaluate @ VM275:54
internalRequire @ internalRequire:549
requireRelative @ internalRequire:638
requireRelativeWithContext @ internalRequire:605
eval @ VM318:2
internalRequire @ internalRequire:586
loadBundle @ internalRequire:3976
(anonymous) @ internalRequire:4658

Issue Analytics

State:
Created 4 years ago
Comments:5 (3 by maintainers)

Top GitHub Comments

1reaction

dckccommented, Dec 12, 2019

we found a work-around using browserfy transforms:

const { makeStringTransform } = require(‘browserify-transform-tools’)

module.exports = makeStringTransform('lavamoat-browserify-workarounds', { excludeExtension: ['.json'] }, (content, _, cb) => {
  const result = content
    // fix html comments
    .split('-->').join('-- >')
    // fix direct eval
    .split(' eval(').join(' (0, eval)(')
    .split('\neval(').join('\n(0, eval)(')

  cb(null, result)
})

0reactions

kumaviscommented, Dec 29, 2019

@dckc this workaround has been added into lavamoat-browserify on by default and uh not yet disable-able by an option

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