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Conservatively treat computed shell options as shell-enabled in child_process command rule - #49998

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pelikhan with Copilot wants to merge 2 commits into
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copilot/fix-no-child-process-rule
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pelikhan with Copilot wants to merge 2 commits into
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copilot/fix-no-child-process-rule

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Copilot AI commented Aug 3, 2026 •

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The no-child-process-interpolated-command rule only recognized literal shell: true or string values for spawn*/execFile*, so computed shell expressions silently bypassed detection. This left common patterns like shell: process.platform === "win32" unreported even when the command string was interpolated or concatenated.

  • Rule behavior

    • Update getShellPropertyValue to treat non-literal shell: values conservatively as possibly shell-enabled.
    • Preserve existing literal handling:
      • shell: true and shell: "/bin/sh" still report.
      • shell: false still does not report.
      • explicit shell: undefined still does not report.
  • Coverage added

    • Add regression cases for computed shell values on shell-conditional methods:
      • identifier: shell: isWindows
      • comparison: shell: process.platform === "win32"
      • conditional: shell: cond ? true : false
  • Example

    const { spawn } = require("child_process");
    
    spawn(`git checkout ${branch}`, ["--"], {
      shell: process.platform === "win32",
    });

    This now reports interpolatedCommand, matching the rule’s conservative handling of other possibly-shell-enabled option shapes such as spreads.

Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>
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github-actions Bot commented Aug 3, 2026

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Hey @Copilot 👋 — thanks for working on this! I see this is a draft PR actively implementing the fix for #49914. A few observations:

Current Status

Before marking ready for review, ensure:

  • Add the implementation: Update getShellPropertyValue() to treat non-literal shell: values (Identifier, MemberExpression, BinaryExpression, ConditionalExpression) conservatively as possibly true, aligning with how SpreadElement options are already handled.
  • Include acceptance tests: Add test cases for the scenarios in issue no-child-process-interpolated-command: shell option detection only recognizes literal true/string — computed shell values silent [Content truncated due to length] #49914 (spawn with { shell: isWindows }, with interpolated command; execFileSync with { shell: process.platform ==='win32' }; conditional expressions).
  • Verify no regressions: Ensure existing tests for literal shell: false, shell: true, and omitted shell options still pass.
  • Update PR description: Replace the task checklist with a clear summary of what changed and why.

Once the code changes are in place, this should be straightforward to review since the scope is narrow and well-defined. Looking forward to it!

Generated by ✅ Contribution Check · auto · 45.9 AIC · ⌖ 3.93 AIC · ⊞ 8.8K · ◷

Copilot AI changed the title [WIP] Fix no-child-process-interpolated-command rule for shell options Conservatively treat computed shell options as shell-enabled in child_process command rule Aug 3, 2026
Copilot AI requested a review from pelikhan August 3, 2026 13:55
@pelikhan
pelikhan marked this pull request as ready for review August 3, 2026 14:46
Copilot AI review requested due to automatic review settings August 3, 2026 14:46
@pelikhan

pelikhan commented Aug 3, 2026

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@copilot resolve the merge conflicts on this branch.

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🟡 Not ready to approve

Restore the deleted workflows and correctly distinguish global from shadowed undefined.

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Pull request overview

Updates the ESLint rule to conservatively detect computed shell options.

Changes:

  • Treats computed shell values as potentially enabled.
  • Adds regression coverage.
  • Unintentionally deletes three compiled workflows.
File summaries
File Description
no-child-process-interpolated-command.ts Updates shell detection; shadowed undefined remains a bypass.
no-child-process-interpolated-command.test.ts Adds computed-shell regression cases.
notion-issue-summary.lock.yml Deletes compiled workflow.
firewall.lock.yml Deletes compiled workflow.
example-permissions-warning.lock.yml Deletes compiled workflow.
Review details

Suppressed comments (3)

.github/workflows/notion-issue-summary.lock.yml:1

  • This deletion is outside the stated rule-and-test scope and removes the compiled Notion Issue Summary workflow while its .md source and status-page link remain. Restore the generated lock file (regenerate it from the source if necessary) so the workflow is not disabled by this lint-rule fix.
    .github/workflows/firewall.lock.yml:1
  • This deletion is outside the stated rule-and-test scope and removes the compiled Firewall workflow while its .md source and status-page link remain. Restore the generated lock file (regenerate it from the source if necessary) so the workflow is not disabled by this lint-rule fix.
    .github/workflows/example-permissions-warning.lock.yml:1
  • This deletion is outside the stated rule-and-test scope and removes the compiled permissions example workflow while its .md source and status-page link remain. Restore the generated lock file (regenerate it from the source if necessary) so the workflow is not disabled by this lint-rule fix.
  • Files reviewed: 8/271 changed files
  • Comments generated: 1
  • Review effort level: Balanced

We're testing this review assessment. Please use 👍 or 👎 to tell us if it's correct.

return prop.value.value === true || typeof prop.value.value === "string";
}

return !(prop.value.type === AST_NODE_TYPES.Identifier && prop.value.name === "undefined");
@pelikhan
pelikhan deleted the copilot/fix-no-child-process-rule branch August 18, 2026 23:21
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