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feat: user configurable logging #870

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feat: user configurable logging #870

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807b4f8
feat(log): introduce user configurable logging
balazsorban44 Nov 20, 2020
47d922f
feat(log): use named parameters
balazsorban44 Nov 20, 2020
a5c2c18
Merge branch 'main' into feature/configurable-logging
balazsorban44 Dec 5, 2020
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64 changes: 47 additions & 17 deletions src/lib/logger.js
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Original file line number Diff line number Diff line change
@@ -1,31 +1,61 @@
const userLogger = {
error: undefined,
warn: undefined,
debug: undefined
}

const logger = {
error: (errorCode, ...text) => {
if (!console) { return }
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error (code, ...text) {
if (text && text.length <= 1) { text = text[0] || '' }
console.error(
`[next-auth][error][${errorCode.toLowerCase()}]`,
text,
`\nhttps://next-auth.js.org/errors#${errorCode.toLowerCase()}`
)
code = code.toLowerCase()
const link = `https://next-auth.js.org/errors#${code}`
if (userLogger.error) {
userLogger.error({ code, text, link })
} else {
console.error(
`[next-auth][error][${code}]`,
text,
`\n${link}`
)
}
},
warn: (warnCode, ...text) => {
if (!console) { return }
warn (code, ...text) {
if (text && text.length <= 1) { text = text[0] || '' }
console.warn(
`[next-auth][warn][${warnCode.toLowerCase()}]`,
text,
`\nhttps://next-auth.js.org/warnings#${warnCode.toLowerCase()}`
)
code = code.toLowerCase()
const link = `https://next-auth.js.org/warnings#${code}`
if (userLogger.warn) {
userLogger.warn({ code, text, link })
} else {
console.warn(
`[next-auth][warn][${code}]`,
text,
`\n${link}}`
)
}
},
debug: (debugCode, ...text) => {
if (!console) { return }
debug (code, ...text) {
if (text && text.length <= 1) { text = text[0] || '' }
code = code.toLowerCase()
if (userLogger.debug) {
userLogger.debug({ code, text })
}
if (process && process.env && process.env._NEXTAUTH_DEBUG) {
console.log(
`[next-auth][debug][${debugCode.toLowerCase()}]`,
`[next-auth][debug][${code}]`,
text
)
}
},
setLogger (logger = {}) {
if (typeof logger.error === 'function') {
userLogger.error = logger.error
}
if (typeof logger.warn === 'function') {
userLogger.warn = logger.warn
}
if (typeof logger.debug === 'function') {
userLogger.debug = logger.debug
}
Comment on lines +49 to +58
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@balazsorban44 balazsorban44 Nov 20, 2020 •
edited
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We could make it so that all three methods are required and only accepted together, and provide a nice TypeError to the user if they forgot one or did not define one correctly. I don't have strong opinions about this.

}
}

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3 changes: 3 additions & 0 deletions src/server/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,9 @@ if (!process.env.NEXTAUTH_URL) {
}

export default async (req, res, userSuppliedOptions) => {
if (userSuppliedOptions.logger) {
logger.setLogger(userSuppliedOptions.logger)
}
Comment on lines +25 to +27
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Providing this in userSuppliedOptions would make this totally backwards compatible and opt-in.

// To the best of my knowledge, we need to return a promise here
// to avoid early termination of calls to the serverless function
// (and then return that promise when we are done) - eslint
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