Index: gc_core/js/ibdawg.js
==================================================================
--- gc_core/js/ibdawg.js
+++ gc_core/js/ibdawg.js
@@ -286,6 +286,8 @@
         // to do
     };
 }
 
 
-exports.IBDAWG = IBDAWG;
+if (typeof(exports) !== 'undefined') {
+    exports.IBDAWG = IBDAWG;
+}

Index: gc_core/js/lang_core/gc_engine.js
==================================================================
--- gc_core/js/lang_core/gc_engine.js
+++ gc_core/js/lang_core/gc_engine.js
@@ -604,20 +604,21 @@
 
 ${callablesJS}
 
 
 
-
-exports.load = load;
-exports.parse = parse;
-exports.lang = lang;
-exports.version = version;
-exports.getDictionary = getDictionary;
-exports.setOption = setOption;
-exports.setOptions = setOptions;
-exports.getOptions = getOptions;
-exports.getDefaultOptions = getDefaultOptions;
-exports.resetOptions = resetOptions;
-exports.ignoreRule = ignoreRule;
-exports.reactivateRule = reactivateRule;
-exports.resetIgnoreRules = resetIgnoreRules;
-exports.listRules = listRules;
+if (typeof(exports) !== 'undefined') {
+    exports.load = load;
+    exports.parse = parse;
+    exports.lang = lang;
+    exports.version = version;
+    exports.getDictionary = getDictionary;
+    exports.setOption = setOption;
+    exports.setOptions = setOptions;
+    exports.getOptions = getOptions;
+    exports.getDefaultOptions = getDefaultOptions;
+    exports.resetOptions = resetOptions;
+    exports.ignoreRule = ignoreRule;
+    exports.reactivateRule = reactivateRule;
+    exports.resetIgnoreRules = resetIgnoreRules;
+    exports.listRules = listRules;
+}

Index: gc_core/js/lang_core/gc_options.js
==================================================================
--- gc_core/js/lang_core/gc_options.js
+++ gc_core/js/lang_core/gc_options.js
@@ -17,8 +17,11 @@
     "Thunderbird": new Map (${dOptThunderbird}),
 }
 
 const dOptLabel = ${dOptLabel};
 
-exports.getOptions = getOptions;
-exports.lStructOpt = lStructOpt;
-exports.dOptLabel = dOptLabel;
+
+if (typeof(exports) !== 'undefined') {
+	exports.getOptions = getOptions;
+	exports.lStructOpt = lStructOpt;
+	exports.dOptLabel = dOptLabel;
+}

Index: gc_core/js/lang_core/gc_rules.js
==================================================================
--- gc_core/js/lang_core/gc_rules.js
+++ gc_core/js/lang_core/gc_rules.js
@@ -7,7 +7,9 @@
 const lParagraphRules = ${paragraph_rules_JS};
 
 const lSentenceRules = ${sentence_rules_JS};
 
 
-exports.lParagraphRules = lParagraphRules;
-exports.lSentenceRules = lSentenceRules;
+if (typeof(exports) !== 'undefined') {
+	exports.lParagraphRules = lParagraphRules;
+	exports.lSentenceRules = lSentenceRules;
+}

Index: gc_core/js/str_transform.js
==================================================================
--- gc_core/js/str_transform.js
+++ gc_core/js/str_transform.js
@@ -52,7 +52,9 @@
     sFlex = sPfxCode.slice(1) + sFlex.slice(sPfxCode.charCodeAt(0)-48);
     return sSfxCode[0] == '0' ? sFlex + sSfxCode.slice(1) : sFlex.slice(0, -(sSfxCode.charCodeAt(0)-48)) + sSfxCode.slice(1);
 }
 
 
-exports.getStemFromSuffixCode = getStemFromSuffixCode;
-exports.getStemFromAffixCode = getStemFromAffixCode;
+if (typeof(exports) !== 'undefined') {
+    exports.getStemFromSuffixCode = getStemFromSuffixCode;
+    exports.getStemFromAffixCode = getStemFromAffixCode;
+}

Index: gc_core/js/tests.js
==================================================================
--- gc_core/js/tests.js
+++ gc_core/js/tests.js
@@ -145,6 +145,9 @@
         return [" ".repeat(sLine.length), ""];
     };
 
 }
 
-exports.TestGrammarChecking = TestGrammarChecking;
+
+if (typeof(exports) !== 'undefined') {
+    exports.TestGrammarChecking = TestGrammarChecking;
+}

Index: gc_core/js/text.js
==================================================================
--- gc_core/js/text.js
+++ gc_core/js/text.js
@@ -168,10 +168,12 @@
         return '# Error. Data: ' + oErr.toString();
     }
 }
 
 
-exports.getParagraph = getParagraph;
-exports.addHtmlEntities = addHtmlEntities;
-exports.createHTMLBlock = createHTMLBlock;
-exports.tagParagraph = tagParagraph;
-exports.getReadableError = getReadableError;
+if (typeof(exports) !== 'undefined') {
+    exports.getParagraph = getParagraph;
+    exports.addHtmlEntities = addHtmlEntities;
+    exports.createHTMLBlock = createHTMLBlock;
+    exports.tagParagraph = tagParagraph;
+    exports.getReadableError = getReadableError;
+}

Index: gc_core/js/tokenizer.js
==================================================================
--- gc_core/js/tokenizer.js
+++ gc_core/js/tokenizer.js
@@ -70,6 +70,9 @@
             sText = sText.slice(nCut);
         }
     }
 }
 
-exports.Tokenizer = Tokenizer;
+
+if (typeof(exports) !== 'undefined') {
+    exports.Tokenizer = Tokenizer;
+}

Index: gc_lang/fr/modules-js/conj.js
==================================================================
--- gc_lang/fr/modules-js/conj.js
+++ gc_lang/fr/modules-js/conj.js
@@ -485,10 +485,11 @@
             return (this.dConj.get(":PQ").get(":Q3")) ? this.dConj.get(":PQ").get(":Q3") : this.dConj.get(":PQ").get(":Q1");
         }
         return (this.dConj.get(":PQ").get(":Q4")) ? this.dConj.get(":PQ").get(":Q4") : this.dConj.get(":PQ").get(":Q1");
     }
 }
+
 
 if (typeof(exports) !== 'undefined') {
     // Used for Grammalecte library.
     // In content scripts, these variable are directly reachable
     exports.Verb = Verb;

Index: gc_lang/fr/modules-js/cregex.js
==================================================================
--- gc_lang/fr/modules-js/cregex.js
+++ gc_lang/fr/modules-js/cregex.js
@@ -262,39 +262,40 @@
     }
     return lMorph.some(s  =>  zNPm.test(s));
 }
 
 
-
-exports.getLemmaOfMorph = getLemmaOfMorph;
-exports.checkAgreement = checkAgreement;
-exports.checkConjVerb = checkConjVerb;
-exports.getGender = getGender;
-exports.getNumber = getNumber;
-exports.isNom = isNom;
-exports.isNomNotAdj = isNomNotAdj;
-exports.isAdj = isAdj;
-exports.isNomAdj = isNomAdj;
-exports.isNomVconj = isNomVconj;
-exports.isInv = isInv;
-exports.isSg = isSg;
-exports.isPl = isPl;
-exports.isEpi = isEpi;
-exports.isMas = isMas;
-exports.isFem = isFem;
-exports.mbNom = mbNom;
-exports.mbAdj = mbAdj;
-exports.mbAdjNb = mbAdjNb;
-exports.mbNomAdj = mbNomAdj;
-exports.mbNomNotAdj = mbNomNotAdj;
-exports.mbPpasNomNotAdj = mbPpasNomNotAdj;
-exports.mbVconj = mbVconj;
-exports.mbVconj123 = mbVconj123;
-exports.mbMG = mbMG;
-exports.mbInv = mbInv;
-exports.mbSg = mbSg;
-exports.mbPl = mbPl;
-exports.mbEpi = mbEpi;
-exports.mbMas = mbMas;
-exports.mbFem = mbFem;
-exports.mbNpr = mbNpr;
-exports.mbNprMasNotFem = mbNprMasNotFem;
+if (typeof(exports) !== 'undefined') {
+    exports.getLemmaOfMorph = getLemmaOfMorph;
+    exports.checkAgreement = checkAgreement;
+    exports.checkConjVerb = checkConjVerb;
+    exports.getGender = getGender;
+    exports.getNumber = getNumber;
+    exports.isNom = isNom;
+    exports.isNomNotAdj = isNomNotAdj;
+    exports.isAdj = isAdj;
+    exports.isNomAdj = isNomAdj;
+    exports.isNomVconj = isNomVconj;
+    exports.isInv = isInv;
+    exports.isSg = isSg;
+    exports.isPl = isPl;
+    exports.isEpi = isEpi;
+    exports.isMas = isMas;
+    exports.isFem = isFem;
+    exports.mbNom = mbNom;
+    exports.mbAdj = mbAdj;
+    exports.mbAdjNb = mbAdjNb;
+    exports.mbNomAdj = mbNomAdj;
+    exports.mbNomNotAdj = mbNomNotAdj;
+    exports.mbPpasNomNotAdj = mbPpasNomNotAdj;
+    exports.mbVconj = mbVconj;
+    exports.mbVconj123 = mbVconj123;
+    exports.mbMG = mbMG;
+    exports.mbInv = mbInv;
+    exports.mbSg = mbSg;
+    exports.mbPl = mbPl;
+    exports.mbEpi = mbEpi;
+    exports.mbMas = mbMas;
+    exports.mbFem = mbFem;
+    exports.mbNpr = mbNpr;
+    exports.mbNprMasNotFem = mbNprMasNotFem;
+}

Index: gc_lang/fr/modules-js/lexicographe.js
==================================================================
--- gc_lang/fr/modules-js/lexicographe.js
+++ gc_lang/fr/modules-js/lexicographe.js
@@ -262,6 +262,8 @@
         return _dAD.get(s.slice(0, nPos)) + " +" + _dAD.get(s.slice(nPos+1));
     };
 }
 
 
-exports.Lexicographe = Lexicographe;
+if (typeof(exports) !== 'undefined') {
+    exports.Lexicographe = Lexicographe;
+}

Index: gc_lang/fr/modules-js/mfsp.js
==================================================================
--- gc_lang/fr/modules-js/mfsp.js
+++ gc_lang/fr/modules-js/mfsp.js
@@ -77,9 +77,11 @@
         return "## erreur, code : " + sSfx + " ##";
     }
 }
 
 
-exports.isFemForm = isFemForm;
-exports.getMasForm = getMasForm;
-exports.hasMiscPlural = hasMiscPlural;
-exports.getMiscPlural = getMiscPlural;
+if (typeof(exports) !== 'undefined') {
+    exports.isFemForm = isFemForm;
+    exports.getMasForm = getMasForm;
+    exports.hasMiscPlural = hasMiscPlural;
+    exports.getMiscPlural = getMiscPlural;
+}

Index: gc_lang/fr/modules-js/phonet.js
==================================================================
--- gc_lang/fr/modules-js/phonet.js
+++ gc_lang/fr/modules-js/phonet.js
@@ -66,8 +66,10 @@
     }
     return aSelect;
 }
 
 
-exports.hasSimil = hasSimil;
-exports.getSimil = getSimil;
-exports.selectSimil = selectSimil;
+if (typeof(exports) !== 'undefined') {
+    exports.hasSimil = hasSimil;
+    exports.getSimil = getSimil;
+    exports.selectSimil = selectSimil;
+}

Index: gc_lang/fr/modules-js/textformatter.js
==================================================================
--- gc_lang/fr/modules-js/textformatter.js
+++ gc_lang/fr/modules-js/textformatter.js
@@ -276,10 +276,11 @@
 
     getDefaultOptions () {
         return dDefaultOptions;
     }
 }
+
 
 if (typeof(exports) !== 'undefined') {
     exports.TextFormatter = TextFormatter;
     exports.oReplTable = oReplTable;
 }