diff --git a/package.json b/package.json
index 61730546..47a4c8dc 100644
--- a/package.json
+++ b/package.json
@@ -32,10 +32,10 @@
     "test": "npm run build && npm run dist && mocha --recursive && npm run lint",
     "lint": "eslint src",
     "lint-fix": "eslint src --fix",
-    "start": "node esbuild-runner.mjs --input src/opentype.mjs --output build/opentype.mjs --externals \"['fs']\" --target es2015 --module --watch --servedir . --global-name opentype --footer \"(function (root, factory) { if (typeof define === 'function' && define.amd)define(factory); else if (typeof module === 'object' && module.exports)module.exports = factory(); else root.opentype = factory(); })(typeof self !== 'undefined' ? self : this, function(){return ((function(a,b){var keys=Object.keys(b);for(var i=0;i<keys.length;i++)a[keys[i]]=b[keys[i]];return a})({'default':opentype},opentype));});\"",
-    "b:umd": "node esbuild-runner.mjs --input src/opentype.mjs --output build/opentype.js  --externals \"['fs']\" --target es2015 --global-name opentype --footer \"(function (root, factory) { if (typeof define === 'function' && define.amd)define(factory); else if (typeof module === 'object' && module.exports)module.exports = factory(); else root.opentype = factory(); })(typeof self !== 'undefined' ? self : this, function(){return ((function(a,b){var keys=Object.keys(b);for(var i=0;i<keys.length;i++)a[keys[i]]=b[keys[i]];return a})({'default':opentype},opentype));});\"",
+    "start": "node esbuild-runner.mjs --input src/opentype.mjs --output dist/opentype.mjs --externals \"['fs']\" --target es2015 --module --watch --servedir . --global-name opentype --footer \"(function (root, factory) { if (typeof define === 'function' && define.amd)define(factory); else if (typeof module === 'object' && module.exports)module.exports = factory(); else root.opentype = factory(); })(typeof self !== 'undefined' ? self : this, function(){return ((function(a,b){var keys=Object.keys(b);for(var i=0;i<keys.length;i++)a[keys[i]]=b[keys[i]];return a})({'default':opentype},opentype));});\"",
+    "b:umd": "node esbuild-runner.mjs --input src/opentype.mjs --output dist/opentype.js  --externals \"['fs']\" --target es2015 --global-name opentype --footer \"(function (root, factory) { if (typeof define === 'function' && define.amd)define(factory); else if (typeof module === 'object' && module.exports)module.exports = factory(); else root.opentype = factory(); })(typeof self !== 'undefined' ? self : this, function(){return ((function(a,b){var keys=Object.keys(b);for(var i=0;i<keys.length;i++)a[keys[i]]=b[keys[i]];return a})({'default':opentype},opentype));});\"",
     "d:umd": "node esbuild-runner.mjs --input src/opentype.mjs --output dist/opentype.min.js  --externals \"['fs']\" --target es2015 --minify --sourcemap --global-name opentype --footer \"(function (root, factory) { if (typeof define === 'function' && define.amd)define(factory); else if (typeof module === 'object' && module.exports)module.exports = factory(); else root.opentype = factory(); })(typeof self !== 'undefined' ? self : this, function(){return ((function(a,b){var keys=Object.keys(b);for(var i=0;i<keys.length;i++)a[keys[i]]=b[keys[i]];return a})({'default':opentype},opentype));});\"",
-    "b:esm": "node esbuild-runner.mjs --input src/opentype.mjs --output build/opentype.mjs --externals \"['fs']\" --target es2015 --module",
+    "b:esm": "node esbuild-runner.mjs --input src/opentype.mjs --output dist/opentype.mjs --externals \"['fs']\" --target es2015 --module",
     "d:esm": "node esbuild-runner.mjs --input src/opentype.mjs --output dist/opentype.min.mjs --externals \"['fs']\" --target es2015 --module --minify --sourcemap",
     "b:compat": "node esbuild-runner.mjs --input src/opentype.mjs --output dist/opentype.compat.js  --externals \"['fs']\" --target compat --global-name opentype --footer \"(function (root, factory) { if (typeof define === 'function' && define.amd)define(factory); else if (typeof module === 'object' && module.exports)module.exports = factory(); else root.opentype = factory(); })(typeof self !== 'undefined' ? self : this, function(){return ((function(a,b){var keys=Object.keys(b);for(var i=0;i<keys.length;i++)a[keys[i]]=b[keys[i]];return a})({'default':opentype},opentype));});\"",
     "d:compat": "node esbuild-runner.mjs --input src/opentype.mjs --output dist/opentype.compat.min.js  --externals \"['fs']\" --target compat --minify --sourcemap --global-name opentype --footer \"(function (root, factory) { if (typeof define === 'function' && define.amd)define(factory); else if (typeof module === 'object' && module.exports)module.exports = factory(); else root.opentype = factory(); })(typeof self !== 'undefined' ? self : this, function(){return ((function(a,b){var keys=Object.keys(b);for(var i=0;i<keys.length;i++)a[keys[i]]=b[keys[i]];return a})({'default':opentype},opentype));});\""
diff --git a/src/svgimages.mjs b/src/svgimages.mjs
index fa0521f6..9ed65a8f 100644
--- a/src/svgimages.mjs
+++ b/src/svgimages.mjs
@@ -1,4 +1,4 @@
-import { isGzip, unGzip } from './util.mjs';
+import { getGlobalScope, isGzip, unGzip } from './util.mjs';
 
 /**
  * @typedef {object} SVGDocCacheEntry
@@ -126,7 +126,7 @@ function createSvgImageCacheEntry(font, svgTemplatePromise, glyphIndex) {
 * @param {Uint8Array} buf
 * @returns {Promise<string>}
 */
-export const decodeSvgDocument = typeof DecompressionStream === 'function'
+export const decodeSvgDocument = typeof getGlobalScope().DecompressionStream === 'function'
     ? decodeSvgDocumentWithDecompressionStream
     : decodeSvgDocumentWithTinyInflate;
 
diff --git a/src/tables/cpal.mjs b/src/tables/cpal.mjs
index c9668033..26b35788 100644
--- a/src/tables/cpal.mjs
+++ b/src/tables/cpal.mjs
@@ -6,6 +6,7 @@
 import { Parser } from '../parse.mjs';
 import check from '../check.mjs';
 import table from '../table.mjs';
+import { getGlobalScope, isBrowser } from '../util.mjs';
 
 // Parse the header `head` table
 function parseCpalTable(data, start) {
@@ -220,7 +221,7 @@ function parseColor(color, targetFormat = 'hexa') {
         if(targetFormat == 'bgra') {
             return color;
         }
-    } else if(typeof document !== 'undefined' && /^[a-z]+$/i.test(color)) {
+    } else if( isBrowser() && getGlobalScope().HTMLCanvasElement && /^[a-z]+$/i.test(color)) {
         // assume CSS color name (only works in browser context!)
         const ctx = document.createElement('canvas').getContext('2d');
         ctx.fillStyle = color;
diff --git a/src/util.mjs b/src/util.mjs
index 2acb65df..71c2eb8a 100644
--- a/src/util.mjs
+++ b/src/util.mjs
@@ -1,19 +1,16 @@
 import { tinf_uncompress as inflate } from './tiny-inflate@1.0.3.esm.mjs';
 
+function getGlobalScope() {
+    return (typeof globalThis !== "undefined"?globalThis:self);
+}
+
 function isBrowser() {
     return (
-        typeof window !== 'undefined' ||
+        (typeof getGlobalScope().window !== 'undefined' && getGlobalScope() === getGlobalScope().window && getGlobalScope().window.document) ||
         typeof WorkerGlobalScope !== 'undefined'
     );
 }
 
-function isNode() {
-    return (
-        typeof window === 'undefined' &&
-        typeof global === 'object' &&
-        typeof process === 'object'
-    );
-}
 
 // Check if 2 arrays of primitives are equal.
 function arraysEqual(ar1, ar2) {
@@ -141,4 +138,4 @@ function copyComponent(c) {
     };
 }
 
-export { isBrowser, isNode, arraysEqual, binarySearch, binarySearchIndex, binarySearchInsert, isGzip, unGzip, copyPoint, copyComponent };
+export { getGlobalScope, isBrowser, arraysEqual, binarySearch, binarySearchIndex, binarySearchInsert, isGzip, unGzip, copyPoint, copyComponent };
diff --git a/test/tables/gasp.mjs b/test/tables/gasp.mjs
new file mode 100644
index 00000000..f22ce280
--- /dev/null
+++ b/test/tables/gasp.mjs
@@ -0,0 +1,32 @@
+import assert from 'assert';
+import { parse } from '../../src/opentype.mjs';
+import { readFileSync } from 'fs';
+const loadSync = (url, opt) => parse(readFileSync(url), opt);
+
+describe('tables/gasp.mjs', function () {
+    const font = loadSync('./test/fonts/Roboto-Black.ttf');
+
+    it('can parse gasp table version', function() {
+        assert.equal(font.tables.gasp.version, 1);
+    });
+    it('can parse gasp table numRanges', function() {
+        assert.equal(font.tables.gasp.numRanges, 2);
+    });
+
+    it('can parse gasp table numRanges 0 rangeMaxPPEM', function() {
+        assert.equal(font.tables.gasp.gaspRanges[0].rangeMaxPPEM, 8); // default value
+    });
+    
+    it('can parse gasp table numRanges 0 rangeGaspBehavior', function() {
+        assert.equal(font.tables.gasp.gaspRanges[0].rangeGaspBehavior, 0x0002); //GASP_DOGRAY = 0x0002
+    });
+    
+    it('can parse gasp table numRanges 1 rangeMaxPPEM', function() {
+        assert.equal(font.tables.gasp.gaspRanges[1].rangeMaxPPEM, 0xFFFF); // default value
+    });
+    
+    it('can parse gasp table numRanges 1 rangeGaspBehavior', function() {
+        assert.equal(font.tables.gasp.gaspRanges[1].rangeGaspBehavior, 0x0001 + 0x0002 + 0x0004 + 0x0008); // all flags set = 15
+    });
+
+});