diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 967536e3..ac064b2d 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -18,4 +18,4 @@ jobs:
       with:
         node-version: ${{ matrix.node-version }}
     - run: npm install
-    - run: npm test
+    - run: npm run ci
diff --git a/index.js b/index.js
index b9f9124d..17869882 100755
--- a/index.js
+++ b/index.js
@@ -55,7 +55,7 @@ function AtImport(options) {
         state,
         [],
         [],
-        postcss
+        postcss,
       )
 
       applyRaws(bundle)
diff --git a/lib/apply-conditions.js b/lib/apply-conditions.js
index 5497cea1..76a8475a 100644
--- a/lib/apply-conditions.js
+++ b/lib/apply-conditions.js
@@ -15,7 +15,7 @@ module.exports = function applyConditions(bundle, atRule) {
     if (stmt.type === "import") {
       stmt.node.params = base64EncodedConditionalImport(
         stmt.fullUri,
-        stmt.conditions
+        stmt.conditions,
       )
       return
     }
diff --git a/lib/base64-encoded-import.js b/lib/base64-encoded-import.js
index d34901cd..a928c62d 100644
--- a/lib/base64-encoded-import.js
+++ b/lib/base64-encoded-import.js
@@ -13,16 +13,16 @@ module.exports = function base64EncodedConditionalImport(prelude, conditions) {
   let params = `${prelude} ${formatImportPrelude(
     first.layer,
     first.media,
-    first.supports
+    first.supports,
   )}`
 
   for (const condition of conditions) {
     params = `'data:text/css;base64,${Buffer.from(`@import ${params}`).toString(
-      "base64"
+      "base64",
     )}' ${formatImportPrelude(
       condition.layer,
       condition.media,
-      condition.supports
+      condition.supports,
     )}`
   }
 
diff --git a/lib/parse-statements.js b/lib/parse-statements.js
index 1fb777e7..328db897 100644
--- a/lib/parse-statements.js
+++ b/lib/parse-statements.js
@@ -106,7 +106,7 @@ function parseImport(result, atRule, conditions, from) {
 
       return result.warn(
         "@import must precede all other statements (besides @charset or empty @layer)",
-        { node: atRule }
+        { node: atRule },
       )
     } while (prev)
   }
@@ -115,7 +115,7 @@ function parseImport(result, atRule, conditions, from) {
     return result.warn(
       "It looks like you didn't end your @import statement correctly. " +
         "Child nodes are attached to it.",
-      { node: atRule }
+      { node: atRule },
     )
   }
 
@@ -195,7 +195,7 @@ function parseImport(result, atRule, conditions, from) {
           `layers must be defined before support conditions in '${atRule.toString()}'`,
           {
             node: atRule,
-          }
+          },
         )
       }
 
@@ -214,7 +214,7 @@ function parseImport(result, atRule, conditions, from) {
           `Multiple support conditions in '${atRule.toString()}'`,
           {
             node: atRule,
-          }
+          },
         )
       }
 
diff --git a/lib/parse-styles.js b/lib/parse-styles.js
index 1fad483d..68a1fef6 100644
--- a/lib/parse-styles.js
+++ b/lib/parse-styles.js
@@ -15,7 +15,7 @@ async function parseStyles(
   state,
   conditions,
   from,
-  postcss
+  postcss,
 ) {
   const statements = parseStatements(result, styles, conditions, from)
 
@@ -45,7 +45,7 @@ async function parseStyles(
       throw stmt.node.error(
         `Incompatible @charset statements:
   ${stmt.node.params} specified in ${stmt.node.source.input.file}
-  ${charset.node.params} specified in ${charset.node.source.input.file}`
+  ${charset.node.params} specified in ${charset.node.source.input.file}`,
       )
     }
   }
@@ -80,14 +80,14 @@ async function resolveImportId(result, stmt, options, state, postcss) {
       stmt.uri,
       options,
       state,
-      postcss
+      postcss,
     )
 
     return
   } else if (dataURL.isValid(stmt.from.slice(-1))) {
     // Data urls can't be used as a base url to resolve imports.
     throw stmt.node.error(
-      `Unable to import '${stmt.uri}' from a stylesheet that is embedded in a data url`
+      `Unable to import '${stmt.uri}' from a stylesheet that is embedded in a data url`,
     )
   }
 
@@ -108,7 +108,7 @@ async function resolveImportId(result, stmt, options, state, postcss) {
       return !path.isAbsolute(file)
         ? resolveId(file, base, options, atRule)
         : file
-    })
+    }),
   )
 
   // Add dependency messages:
@@ -124,7 +124,7 @@ async function resolveImportId(result, stmt, options, state, postcss) {
   const importedContent = await Promise.all(
     resolved.map(file => {
       return loadImportContent(result, stmt, file, options, state, postcss)
-    })
+    }),
   )
 
   // Merge loaded statements
@@ -138,13 +138,13 @@ async function loadImportContent(
   filename,
   options,
   state,
-  postcss
+  postcss,
 ) {
   const atRule = stmt.node
   const { conditions, from } = stmt
   const stmtDuplicateCheckKey = conditions
     .map(condition =>
-      formatImportPrelude(condition.layer, condition.media, condition.supports)
+      formatImportPrelude(condition.layer, condition.media, condition.supports),
     )
     .join(":")
 
@@ -185,7 +185,7 @@ async function loadImportContent(
     content,
     filename,
     options,
-    postcss
+    postcss,
   )
 
   const styles = importedResult.root
@@ -213,7 +213,7 @@ async function loadImportContent(
     state,
     conditions,
     [...from, filename],
-    postcss
+    postcss,
   )
 }
 
diff --git a/lib/process-content.js b/lib/process-content.js
index e0c2ac89..a0484039 100644
--- a/lib/process-content.js
+++ b/lib/process-content.js
@@ -11,7 +11,7 @@ module.exports = function processContent(
   content,
   filename,
   options,
-  postcss
+  postcss,
 ) {
   const { plugins } = options
   const ext = path.extname(filename)
diff --git a/lib/resolve-id.js b/lib/resolve-id.js
index aca3002d..3929a957 100644
--- a/lib/resolve-id.js
+++ b/lib/resolve-id.js
@@ -36,7 +36,7 @@ module.exports = function resolveId(id, base, options, node) {
         `Failed to find '${id}'
   in [
     ${paths.join(",\n    ")}
-  ]`
+  ]`,
       )
     })
 }
diff --git a/test/custom-resolve.js b/test/custom-resolve.js
index 130f9dab..094d3831 100644
--- a/test/custom-resolve.js
+++ b/test/custom-resolve.js
@@ -23,10 +23,10 @@ test.serial(
   {
     resolve: () => {
       return Promise.resolve(
-        path.resolve("test/fixtures/imports/custom-resolve-1.css")
+        path.resolve("test/fixtures/imports/custom-resolve-1.css"),
       )
     },
-  }
+  },
 )
 
 test.serial(
@@ -41,7 +41,7 @@ test.serial(
         path.resolve("test/fixtures/imports/custom-resolve-1.css"),
       ]
     },
-  }
+  },
 )
 
 test.serial(
@@ -56,7 +56,7 @@ test.serial(
         path.resolve("test/fixtures/imports/custom-resolve-1.css"),
       ])
     },
-  }
+  },
 )
 
 test("should apply default resolver when custom doesn't return an absolute path", t => {
@@ -68,7 +68,7 @@ test("should apply default resolver when custom doesn't return an absolute path"
           t.is(p, path.resolve("test/fixtures/imports", "bar.css"))
           return "/* comment */"
         },
-      })
+      }),
     )
     .process(`@import "foo.css";`, {
       from: "test/fixtures/custom-resolve-file",
diff --git a/test/custom-syntax-parser.js b/test/custom-syntax-parser.js
index 729f6b29..aa32504e 100644
--- a/test/custom-syntax-parser.js
+++ b/test/custom-syntax-parser.js
@@ -16,7 +16,7 @@ test(
   checkFixture,
   "scss-parser",
   null,
-  { parser: scss }
+  { parser: scss },
 )
 
 test(".css importing .sss should work", checkFixture, "import-sss")
@@ -26,7 +26,7 @@ test(
   checkFixture,
   { name: "sugar", ext: ".sss" },
   null,
-  { parser: sugarss }
+  { parser: sugarss },
 )
 
 test(
@@ -34,13 +34,13 @@ test(
   checkFixture,
   { name: "sugar-import-css", ext: ".sss" },
   null,
-  { parser: sugarss }
+  { parser: sugarss },
 )
 
 test(
   ".css importing .sss importing .css should work",
   checkFixture,
-  "import-sss-css"
+  "import-sss-css",
 )
 
 test(
@@ -48,5 +48,5 @@ test(
   checkFixture,
   { name: "import-css-sss", ext: ".sss" },
   null,
-  { parser: sugarss }
+  { parser: sugarss },
 )
diff --git a/test/data-url.js b/test/data-url.js
index 33e469f3..353b97b5 100644
--- a/test/data-url.js
+++ b/test/data-url.js
@@ -16,12 +16,12 @@ test("should error on relative urls from stylesheets in data urls", t => {
     .use(atImport())
     .process(
       "@import url(data:text/css;base64,QGltcG9ydCB1cmwoZm9vLmNzcyk7CgpwIHsKICBjb2xvcjogYmx1ZTsKfQo=);",
-      { from: undefined }
+      { from: undefined },
     )
     .catch(error =>
       t.regex(
         error.message,
-        /Unable to import '(?:.*?)' from a stylesheet that is embedded in a data url/
-      )
+        /Unable to import '(?:.*?)' from a stylesheet that is embedded in a data url/,
+      ),
     )
 })
diff --git a/test/helpers/check-fixture.js b/test/helpers/check-fixture.js
index de667398..849588f2 100644
--- a/test/helpers/check-fixture.js
+++ b/test/helpers/check-fixture.js
@@ -36,7 +36,7 @@ module.exports = function (t, file, opts, postcssOpts, warnings) {
         t.is(
           warning.text,
           warnings[index],
-          `unexpected warning: "${warning.text}"`
+          `unexpected warning: "${warning.text}"`,
         )
       })
 
@@ -45,7 +45,7 @@ module.exports = function (t, file, opts, postcssOpts, warnings) {
         result.warnings().length,
         `expected ${warnings.length} warning(s), got ${
           result.warnings().length
-        }`
+        }`,
       )
     })
 }
diff --git a/test/import-events.js b/test/import-events.js
index 638754ea..970baf17 100644
--- a/test/import-events.js
+++ b/test/import-events.js
@@ -18,7 +18,7 @@ test("should add dependency message for each import", t => {
     })
     .then(result => {
       const deps = result.messages.filter(
-        message => message.type === "dependency"
+        message => message.type === "dependency",
       )
       const expected = [
         {
diff --git a/test/import.js b/test/import.js
index e0d0b8ab..e2a2bd17 100644
--- a/test/import.js
+++ b/test/import.js
@@ -23,7 +23,7 @@ test(
   "duplicates",
   {
     skipDuplicates: false,
-  }
+  },
 )
 
 test(
@@ -32,7 +32,7 @@ test(
   "cyclical",
   {
     skipDuplicates: false,
-  }
+  },
 )
 
 test(
@@ -41,7 +41,7 @@ test(
   "cyclical-skip-duplicates",
   {
     skipDuplicates: true,
-  }
+  },
 )
 
 test("should import stylesheets with same content", checkFixture, "same")
@@ -64,7 +64,7 @@ test("should not fail with absolute and local import", t => {
     .use(atImport())
     .process(
       "@import url('http://');\n@import 'test/fixtures/imports/foo.css';",
-      { from: undefined }
+      { from: undefined },
     )
     .then(result => t.is(result.css, "@import url('http://');\nfoo{}"))
 })
@@ -83,7 +83,7 @@ test("should keep @charset first", t => {
 test(
   "should handle multiple @charset statements",
   checkFixture,
-  "charset-import"
+  "charset-import",
 )
 
 test("should error if incompatible @charset statements", t => {
@@ -96,7 +96,7 @@ test("should error if incompatible @charset statements", t => {
       t.truthy(err)
       t.regex(
         err.message,
-        /Incompatible @charset statements:.+specified in.+specified in.+/s
+        /Incompatible @charset statements:.+specified in.+specified in.+/s,
       )
     })
 })
@@ -125,8 +125,8 @@ test("should contain a correct sourcemap", t => {
           process.platform === "win32"
             ? "test/sourcemap/out.css.win.map"
             : "test/sourcemap/out.css.map",
-          "utf8"
-        ).trim()
+          "utf8",
+        ).trim(),
       )
     })
 })
@@ -150,14 +150,14 @@ test(
   "empty-and-useless",
   { path: "test/fixtures/imports" },
   null,
-  [`${path.resolve("test/fixtures/imports/empty.css")} is empty`]
+  [`${path.resolve("test/fixtures/imports/empty.css")} is empty`],
 )
 
 test(
   "should be able to disable warnings for empty files",
   checkFixture,
   "empty-and-useless",
-  { path: "test/fixtures/imports", warnOnEmpty: false }
+  { path: "test/fixtures/imports", warnOnEmpty: false },
 )
 
 test("should work with no styles without throwing an error", t => {
diff --git a/test/layer.js b/test/layer.js
index 81b4ad9c..c80cc32f 100644
--- a/test/layer.js
+++ b/test/layer.js
@@ -10,13 +10,13 @@ test("should resolve layers of import statements", checkFixture, "layer")
 test(
   "should correctly wrap imported at rules in layers",
   checkFixture,
-  "layer-import-atrules"
+  "layer-import-atrules",
 )
 
 test(
   "should correctly wrap imported at rules in anonymous layers",
   checkFixture,
-  "layer-import-atrules-anonymous"
+  "layer-import-atrules-anonymous",
 )
 
 test(
@@ -25,11 +25,11 @@ test(
   "layer-duplicate-anonymous-imports",
   {
     skipDuplicates: false,
-  }
+  },
 )
 
 test(
   "should correctly handle duplicate anonymous imports and skip duplicates is true",
   checkFixture,
-  "layer-duplicate-anonymous-imports-skip"
+  "layer-duplicate-anonymous-imports-skip",
 )
diff --git a/test/lint.js b/test/lint.js
index 3082400c..6f531de3 100644
--- a/test/lint.js
+++ b/test/lint.js
@@ -18,7 +18,7 @@ test("should warn when not @charset and not @import statement before", t => {
       t.is(warnings.length, 1)
       t.is(
         warnings[0].text,
-        "@import must precede all other statements (besides @charset or empty @layer)"
+        "@import must precede all other statements (besides @charset or empty @layer)",
       )
     })
   })
@@ -32,14 +32,14 @@ test("should warn about all imports after some other CSS declaration", t => {
         @import "a.css";
         @import "b.css";
       `,
-      { from: undefined }
+      { from: undefined },
     )
     .then(result => {
       t.plan(2)
       result.warnings().forEach(warning => {
         t.is(
           warning.text,
-          "@import must precede all other statements (besides @charset or empty @layer)"
+          "@import must precede all other statements (besides @charset or empty @layer)",
         )
       })
     })
@@ -53,7 +53,7 @@ test("should warn if non-empty @layer before @import", t => {
       result.warnings().forEach(warning => {
         t.is(
           warning.text,
-          "@import must precede all other statements (besides @charset or empty @layer)"
+          "@import must precede all other statements (besides @charset or empty @layer)",
         )
       })
     })
@@ -67,14 +67,14 @@ test("should warn when import statements are not consecutive", t => {
         @layer a;
         @import "bar.css";
       `,
-      { from: "test/fixtures/imports/foo.css" }
+      { from: "test/fixtures/imports/foo.css" },
     )
     .then(result => {
       t.plan(1)
       result.warnings().forEach(warning => {
         t.is(
           warning.text,
-          "@import must precede all other statements (besides @charset or empty @layer)"
+          "@import must precede all other statements (besides @charset or empty @layer)",
         )
       })
     })
@@ -149,7 +149,7 @@ test("should warn when a user didn't close an import with ;", t => {
       t.is(
         warnings[0].text,
         "It looks like you didn't end your @import statement correctly. " +
-          "Child nodes are attached to it."
+          "Child nodes are attached to it.",
       )
     })
 })
@@ -168,7 +168,7 @@ test("should warn on invalid url", t => {
       @import layer url("");
       @import supports(foo: bar) url("");
       `,
-      { from: undefined }
+      { from: undefined },
     )
     .then(result => {
       const warnings = result.warnings()
@@ -183,7 +183,7 @@ test("should warn on invalid url", t => {
       t.is(warnings[7].text, `Unable to find uri in '@import layer url("")'`)
       t.is(
         warnings[8].text,
-        `Unable to find uri in '@import supports(foo: bar) url("")'`
+        `Unable to find uri in '@import supports(foo: bar) url("")'`,
       )
     })
 })
@@ -200,7 +200,7 @@ test("should warn on duplicate url's", t => {
       @import url('foo') layer(foo) "bar";
       @import url('foo') supports(foo: bar) url(bar);
       `,
-      { from: undefined }
+      { from: undefined },
     )
     .then(result => {
       const warnings = result.warnings()
@@ -211,15 +211,15 @@ test("should warn on duplicate url's", t => {
       t.is(warnings[3].text, `Multiple url's in '@import url('foo') url(bar)'`)
       t.is(
         warnings[4].text,
-        `Multiple url's in '@import url('foo') layer url(bar)'`
+        `Multiple url's in '@import url('foo') layer url(bar)'`,
       )
       t.is(
         warnings[5].text,
-        `Multiple url's in '@import url('foo') layer(foo) "bar"'`
+        `Multiple url's in '@import url('foo') layer(foo) "bar"'`,
       )
       t.is(
         warnings[6].text,
-        `Multiple url's in '@import url('foo') supports(foo: bar) url(bar)'`
+        `Multiple url's in '@import url('foo') supports(foo: bar) url(bar)'`,
       )
     })
 })
@@ -230,14 +230,14 @@ test("should warn on multiple layer clauses", t => {
       `
       @import url('foo') layer layer(bar);
       `,
-      { from: undefined }
+      { from: undefined },
     )
     .then(result => {
       const warnings = result.warnings()
       t.is(warnings.length, 1)
       t.is(
         warnings[0].text,
-        `Multiple layers in '@import url('foo') layer layer(bar)'`
+        `Multiple layers in '@import url('foo') layer layer(bar)'`,
       )
     })
 })
@@ -248,14 +248,14 @@ test("should warn on when support conditions precede layer clauses", t => {
       `
       @import url('foo') supports(selector(&)) layer(bar);
       `,
-      { from: undefined }
+      { from: undefined },
     )
     .then(result => {
       const warnings = result.warnings()
       t.is(warnings.length, 1)
       t.is(
         warnings[0].text,
-        `layers must be defined before support conditions in '@import url('foo') supports(selector(&)) layer(bar)'`
+        `layers must be defined before support conditions in '@import url('foo') supports(selector(&)) layer(bar)'`,
       )
     })
 })
@@ -266,14 +266,14 @@ test("should warn on multiple support conditions", t => {
       `
       @import url('foo') supports(selector(&)) supports((display: grid));
       `,
-      { from: undefined }
+      { from: undefined },
     )
     .then(result => {
       const warnings = result.warnings()
       t.is(warnings.length, 1)
       t.is(
         warnings[0].text,
-        `Multiple support conditions in '@import url('foo') supports(selector(&)) supports((display: grid))'`
+        `Multiple support conditions in '@import url('foo') supports(selector(&)) supports((display: grid))'`,
       )
     })
 })
diff --git a/test/media.js b/test/media.js
index fce94ebc..38ce5c10 100644
--- a/test/media.js
+++ b/test/media.js
@@ -8,7 +8,7 @@ const checkFixture = require("./helpers/check-fixture")
 test(
   "should resolve media queries of import statements",
   checkFixture,
-  "media-import"
+  "media-import",
 )
 
 test("should resolve media queries", checkFixture, "media-query")
@@ -16,13 +16,13 @@ test("should resolve media queries", checkFixture, "media-query")
 test(
   "should resolve content inside import with media queries",
   checkFixture,
-  "media-content"
+  "media-content",
 )
 
 test(
   "should resolve media query imports with charset",
   checkFixture,
-  "media-charset"
+  "media-charset",
 )
 
 test("should correctly combine media queries", checkFixture, "media-combine")
diff --git a/test/resolve.js b/test/resolve.js
index 2be4794c..cde06384 100644
--- a/test/resolve.js
+++ b/test/resolve.js
@@ -19,21 +19,21 @@ test(
   checkFixture,
   "resolve-from",
   { path: null },
-  { from: "test/fixtures/file.css" }
+  { from: "test/fixtures/file.css" },
 )
 
 test(
   `should resolve relative to 'path' which resolved with cwd`,
   checkFixture,
   "resolve-path-cwd",
-  { path: "test/fixtures/imports" }
+  { path: "test/fixtures/imports" },
 )
 
 test(
   `should resolve relative to 'path' which resolved with 'root'`,
   checkFixture,
   "resolve-path-root",
-  { root: "test/fixtures", path: "imports" }
+  { root: "test/fixtures", path: "imports" },
 )
 
 test("should resolve local modules", checkFixture, "resolve-local-modules", {
@@ -46,7 +46,7 @@ test(
   "resolve-path-modules",
   {
     path: "test/fixtures/imports/modules",
-  }
+  },
 )
 
 test(
@@ -54,7 +54,7 @@ test(
   checkFixture,
   "resolve-modules",
   { path: null },
-  { from: "test/fixtures/imports/foo.css" }
+  { from: "test/fixtures/imports/foo.css" },
 )
 
 test(
@@ -62,7 +62,7 @@ test(
   checkFixture,
   "resolve-npm-subpackages",
   { path: null },
-  { from: "test/fixtures/imports/foo.css" }
+  { from: "test/fixtures/imports/foo.css" },
 )
 
 test(
@@ -70,5 +70,5 @@ test(
   checkFixture,
   "resolve-custom-modules",
   { path: null, addModulesDirectories: ["shared_modules"] },
-  { from: "test/fixtures/imports/foo.css" }
+  { from: "test/fixtures/imports/foo.css" },
 )
diff --git a/test/supports-condition.js b/test/supports-condition.js
index fc995f79..f985264d 100644
--- a/test/supports-condition.js
+++ b/test/supports-condition.js
@@ -8,5 +8,5 @@ const checkFixture = require("./helpers/check-fixture")
 test(
   "should resolve supports conditions of import statements",
   checkFixture,
-  "supports-condition-import"
+  "supports-condition-import",
 )