diff --git a/release/package-lock.json b/release/package-lock.json
index 4dbcb3f..46d3963 100644
--- a/release/package-lock.json
+++ b/release/package-lock.json
@@ -1961,13 +1961,13 @@
       "license": "ISC"
     },
     "node_modules/handlebars": {
-      "version": "4.7.9",
-      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.7.9.tgz",
-      "integrity": "sha512-4E71E0rpOaQuJR2A3xDZ+GM1HyWYv1clR58tC8emQNeQe3RH7MAzSbat+V0wG78LQBo6m6bzSG/L4pBuCsgnUQ==",
+      "version": "4.7.10",
+      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.7.10.tgz",
+      "integrity": "sha512-P5VJMVM7qgBn6vjXMw8WG9uVI+ncf2pi72j4de4yz5ZULLj2RGqLYaKOYGsgyrViQ0tePOVlN1tDCCXXtFqXKg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "minimist": "^1.2.5",
+        "minimist": "^1.2.8",
         "neo-async": "^2.6.2",
         "source-map": "^0.6.1",
         "wordwrap": "^1.0.0"
diff --git a/src/formatter/regexp.spec.ts b/src/formatter/regexp.spec.ts
index 0c14571..b72d52b 100644
--- a/src/formatter/regexp.spec.ts
+++ b/src/formatter/regexp.spec.ts
@@ -1,6 +1,12 @@
 import { newLine } from './'
 
 describe('newLine', () => {
+  const realProcess = global.process
+
+  afterEach(() => {
+    global.process = realProcess
+  })
+
   it('should return correct new line regexp entry for windows', () => {
     Object.defineProperty(process, 'platform', {
       value: 'win32'
@@ -16,4 +22,13 @@ describe('newLine', () => {
 
     expect(newLine()).toEqual('\\n')
   })
+
+  it('should return the unix new line when there is no process', () => {
+    // The formatter runs in browsers too, where process does not exist. This
+    // is the case that used to throw a ReferenceError.
+    // @ts-expect-error - simulating a browser, which has no process object
+    delete global.process
+
+    expect(newLine()).toEqual('\\n')
+  })
 })
diff --git a/src/formatter/regexp.ts b/src/formatter/regexp.ts
index 6fc362e..8e839d4 100644
--- a/src/formatter/regexp.ts
+++ b/src/formatter/regexp.ts
@@ -1,5 +1,15 @@
-// FIXME: if isWindows is used, it breaks cli.spec.ts because Logger is undefined
-// import { isWindows } from '../'
-// export const newLine = () => (isWindows() ? '\\r\\n' : '\\n')
+// Kept self-contained rather than importing isWindows from '../': that module
+// imports path and is loaded from the package root, which pulls Logger into
+// this module and breaks cli.spec.ts with an undefined Logger.
 
-export const newLine = () => (process.platform === 'win32' ? '\\r\\n' : '\\n')
+/**
+ * The line ending to join formatted rows with.
+ *
+ * process may not exist - the formatter runs in browsers, to build request
+ * bodies - so the platform is read defensively and a browser gets the unix
+ * ending.
+ */
+export const newLine = () =>
+  typeof process !== 'undefined' && process.platform === 'win32'
+    ? '\\r\\n'
+    : '\\n'
diff --git a/src/utils/utils.spec.ts b/src/utils/utils.spec.ts
new file mode 100644
index 0000000..9100dc9
--- /dev/null
+++ b/src/utils/utils.spec.ts
@@ -0,0 +1,34 @@
+import { isLinux, isWindows } from './utils'
+
+describe('platform helpers', () => {
+  const realProcess = global.process
+
+  afterEach(() => {
+    global.process = realProcess
+  })
+
+  it('reports windows from process.platform', () => {
+    Object.defineProperty(process, 'platform', { value: 'win32' })
+
+    expect(isWindows()).toBe(true)
+    expect(isLinux()).toBe(false)
+  })
+
+  it('reports linux from process.platform', () => {
+    Object.defineProperty(process, 'platform', { value: 'linux' })
+
+    expect(isWindows()).toBe(false)
+    expect(isLinux()).toBe(true)
+  })
+
+  it('answers false for both when there is no process', () => {
+    // These helpers are exported from the package root and called from browser
+    // code, where process does not exist. This is the case that used to throw
+    // a ReferenceError.
+    // @ts-expect-error - simulating a browser, which has no process object
+    delete global.process
+
+    expect(isWindows()).toBe(false)
+    expect(isLinux()).toBe(false)
+  })
+})
diff --git a/src/utils/utils.ts b/src/utils/utils.ts
index 2ad1924..aeed08f 100644
--- a/src/utils/utils.ts
+++ b/src/utils/utils.ts
@@ -19,9 +19,16 @@ export const uuidv4 = () =>
 
 export const uniqArray = (data: any[]) => Array.from(new Set(data))
 
-export const isWindows = () => process.platform === 'win32'
+/**
+ * Whether the host is Windows. process may not exist - these helpers are
+ * exported from the package root and called from browser code - so the
+ * platform is read defensively and a browser answers false.
+ */
+export const isWindows = () =>
+  typeof process !== 'undefined' && process.platform === 'win32'
 
-export const isLinux = () => process.platform === 'linux'
+export const isLinux = () =>
+  typeof process !== 'undefined' && process.platform === 'linux'
 
 /**
  * replace single backslash with double backslash