fix: do not augment plugin-options (#26006)

Author: wardpeet

packages/gatsby-plugin-sharp/src/trace-svg.js

@@ -130,7 +130,7 @@ exports.notMemoizedtraceSVG = async ({ file, args, fileArgs, reporter }) => {
       turnPolicy: potrace.Potrace.TURNPOLICY_MAJORITY,
     }
 
-    const optionsSVG = _.defaults(args, defaultArgs)
+    const optionsSVG = _.defaults({}, args, defaultArgs)
 
     // `srcset` attribute rejects URIs with literal spaces
     const encodeSpaces = str => str.replace(/ /gi, `%20`)

packages/gatsby-remark-copy-linked-files/src/index.js

@@ -85,7 +85,7 @@ module.exports = (
   if (!validateDestinationDir(destinationDir))
     return Promise.reject(invalidDestinationDirMessage(destinationDir))
 
-  const options = _.defaults(pluginOptions, defaults)
+  const options = _.defaults({}, pluginOptions, defaults)
 
   const filesToCopy = new Map()
   // Copy linked files to the destination directory and modify the AST to point

packages/gatsby-remark-images-contentful/src/index.js

@@ -58,7 +58,7 @@ module.exports = async (
 
     const srcSplit = node.url.split(`/`)
     const fileName = srcSplit[srcSplit.length - 1]
-    const options = _.defaults(pluginOptions, defaults)
+    const options = _.defaults({}, pluginOptions, defaults)
 
     const optionsHash = createContentDigest(options)
 

packages/gatsby-remark-images/src/index.js

@@ -35,7 +35,7 @@ module.exports = (
   },
   pluginOptions
 ) => {
-  const options = _.defaults(pluginOptions, { pathPrefix }, DEFAULT_OPTIONS)
+  const options = _.defaults({}, pluginOptions, { pathPrefix }, DEFAULT_OPTIONS)
 
   const findParentLinks = ({ children }) =>
     children.some(

packages/gatsby-remark-responsive-iframe/src/index.js

@@ -26,7 +26,7 @@ module.exports = async ({ markdownAST }, pluginOptions = {}) => {
   const defaults = {
     wrapperStyle: ``,
   }
-  const options = _.defaults(pluginOptions, defaults)
+  const options = _.defaults({}, pluginOptions, defaults)
   visit(markdownAST, [`html`, `jsx`], node => {
     const $ = cheerio.load(node.value)
     const iframe = $(`iframe, object`)