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Interface Logger

An object that can be passed to LegacySharedOptions.logger to control how Sass emits warnings and debug messages.

example 
constfs = require('fs');
constsass = require('sass');

letlog = "";
sass.renderSync({
file:'input.scss',
logger: {
warn(message, options) {
if (options.span) {
log += `${span.url}:${span.start.line}:${span.start.column}: ` +
`${message}\n`;
      } else {
log += `::: ${message}\n`;
      }
    }
  }
});

fs.writeFileSync('log.txt', log);

Hierarchy

  • Logger

Index

Methods

Methods

Optional debug

  • debug(message: string, options: { span: SourceSpan }): void

  • This method is called when Sass emits a debug message due to a @debug rule.

    If this is undefined, Sass will print debug messages to standard error.

    Parameters

    • message: string

      The debug message.

    • options: { span: SourceSpan }
      • span: SourceSpan

        The location in the Sass source code that generated this debug message.

    Returns void

Optional warn

  • warn(message: string, options: { deprecation: boolean; span?: SourceSpan; stack?: string }): void

  • This method is called when Sass emits a warning, whether due to a @warn rule or a warning generated by the Sass compiler.

    If this is undefined, Sass will print warnings to standard error.

    Parameters

    • message: string

      The warning message.

    • options: { deprecation: boolean; span?: SourceSpan; stack?: string }
      • deprecation: boolean

        Whether this is a deprecation warning.

      • Optional span?: SourceSpan

        The location in the Sass source code that generated this warning.

      • Optional stack?: string

        The Sass stack trace at the point the warning was issued.

    Returns void

© 2006–2022 the Sass team, and numerous contributors
Licensed under the MIT License.
https://sass-lang.com/documentation/js-api/interfaces/Logger