DeprecationReportBody.lineNumber
The lineNumber read-only property of the DeprecationReportBody interface returns the line in the source file in which the deprecated feature was used.
Note: This property is most useful alongside DeprecationReportBody.sourceFile as it enables the location of the line in that file where the error occurred.
Value
An integer, or null if the line is not known.
Examples
In this example we create a new ReportingObserver to observe deprecation reports, then print the value of lineNumber to the console.
let options = {
types: ['deprecation'],
buffered: true
}
let observer = new ReportingObserver(function(reports, observer) {
let firstReport = reports[0];
console.log(firstReport.type); // deprecation
console.log(firstReport.body.sourceFile); // the source file
console.log(firstReport.body.lineNumber); // the line in that file
}, options);
Specifications
No specification found
No specification data found for api.DeprecationReportBody.lineNumber.
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Browser compatibility
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