fix(mcp): skip empty secret values in redactText#39923
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derodero24 wants to merge 1 commit intomicrosoft:mainfrom
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fix(mcp): skip empty secret values in redactText#39923derodero24 wants to merge 1 commit intomicrosoft:mainfrom
derodero24 wants to merge 1 commit intomicrosoft:mainfrom
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When a secrets .env file contains empty-string values (e.g. from
dotenv parsing comments like `KEY=#{VAR}#`), `replaceAll("", ...)`
inserts the replacement between every character, causing exponential
string growth and a V8 RangeError.
Guard against empty values in both `_redactSecrets` and
`dotenvFileLoader` to prevent the crash.
Fixes microsoft/playwright-mcp#1474
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Summary
Fixes microsoft/playwright-mcp#1474
Empty-string secret values parsed from
.envfiles (e.g.KEY=#{VAR}#where dotenv strips comments) causeString.replaceAll("", ...)to insert the replacement tag between every character. This grows the string exponentially across multiple empty secrets, crashing V8 with aRangeError.secretValuein_redactSecrets()before callingreplaceAlldotenvFileLoader()at parse timeFixes microsoft/playwright-mcp#1474