SourceMap mode for esbuild.

See also: https://esbuild.github.io/api/#sourcemap

new nodejs.NodejsFunction(this, 'my-handler', {
  bundling: {
    minify: true, 
    sourceMap: true, 
    sourceMapMode: nodejs.SourceMapMode.INLINE, 
    sourcesContent: false, 
    target: 'es2020', 
    loader: { 
      '.png': 'dataurl',
    },
    define: { 
      'process.env.API_KEY': JSON.stringify('xxx-xxxx-xxx'),
      'process.env.PRODUCTION': JSON.stringify(true),
      'process.env.NUMBER': JSON.stringify(123),
    },
    logLevel: nodejs.LogLevel.ERROR, 
    keepNames: true, 
    tsconfig: 'custom-tsconfig.json', 
    metafile: true, 
    banner: '/* comments */', 
    footer: '/* comments */', 
    charset: nodejs.Charset.UTF8, 
    format: nodejs.OutputFormat.ESM, 
    mainFields: ['module', 'main'], 
    inject: ['./my-shim.js', './other-shim.js'], 
    esbuildArgs: { 
      "--log-limit": "0",
      "--splitting": true,
    },
  },
});

Default sourceMap mode - will generate a .js.map file alongside any generated .js file and add a special //# sourceMappingURL= comment to the bottom of the .js file pointing to the .js.map file.

External sourceMap mode - If you want to omit the special //# sourceMappingURL= comment from the generated .js file but you still want to generate the .js.map files.

Inline sourceMap mode - If you want to insert the entire source map into the .js file instead of generating a separate .js.map file.

Both sourceMap mode - If you want to have the effect of both inline and external simultaneously.