79 lines
2.0 KiB
JavaScript
79 lines
2.0 KiB
JavaScript
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const { format } = require('../');
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const { combine, json, metadata, timestamp } = format;
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// Default Functionality (no options passed)
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const defaultFormatter = combine(
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timestamp(),
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metadata(),
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json()
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);
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const defaultMessage = defaultFormatter.transform({
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level: 'info',
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message: 'This should be a message.',
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application: 'Microsoft Office',
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store: 'Big Box Store',
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purchaseAmount: '9.99'
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});
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console.dir(defaultMessage);
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// Fill all keys into metadata except those provided
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const formattedLogger = combine(
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timestamp(),
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metadata({ fillExcept: ['message', 'level', 'timestamp'] }),
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json()
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);
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const fillExceptMessage = formattedLogger.transform({
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level: 'info',
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message: 'This should have attached metadata',
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category: 'movies',
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subCategory: 'action'
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});
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console.dir(fillExceptMessage);
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// Fill only the keys provided into the object, and also give it a different key
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const customMetadataLogger = combine(
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timestamp(),
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metadata({ fillWith: ['publisher', 'author', 'book'], key: 'bookInfo' }),
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json()
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);
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const fillWithMessage = customMetadataLogger.transform({
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level: 'debug',
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message: 'This message should be outside of the bookInfo object',
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publisher: 'Lorem Press',
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author: 'Albert Einstein',
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book: '4D Chess for Dummies',
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label: 'myCustomLabel'
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});
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console.dir(fillWithMessage);
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// Demonstrates Metadata 'chaining' to combine multiple datapoints.
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const chainedMetadata = combine(
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timestamp(),
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metadata({ fillWith: ['publisher', 'author', 'book'], key: 'bookInfo' }),
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metadata({ fillWith: ['purchasePrice', 'purchaseDate', 'transactionId'], key: 'transactionInfo' }),
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metadata({ fillExcept: ['level', 'message', 'label', 'timestamp'] }),
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json()
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);
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const chainedMessage = chainedMetadata.transform({
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level: 'debug',
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message: 'This message should be outside of the bookInfo object',
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publisher: 'Lorem Press',
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author: 'Albert Einstein',
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book: '4D Chess for Dummies',
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label: 'myCustomLabel',
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purchasePrice: '9.99',
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purchaseDate: '2.10.2018',
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transactionId: '123ABC'
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});
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console.dir(chainedMessage);
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