diff --git a/scripts/_printers.js b/scripts/_printers.js
new file mode 100644
index 00000000..d8ca1471
--- /dev/null
+++ b/scripts/_printers.js
@@ -0,0 +1,7 @@
+exports.print = function(str) {
+	process.stdout.write(`${str}\n`);
+};
+
+exports.printError = function(str) {
+	process.stderr.write(`${str}\n`);
+};
\ No newline at end of file
diff --git a/scripts/aosp2tt9.js b/scripts/aosp2tt9.js
index 11e6a57a..f2e75915 100644
--- a/scripts/aosp2tt9.js
+++ b/scripts/aosp2tt9.js
@@ -1,11 +1,12 @@
 const { basename } = require('path');
 const { createReadStream, existsSync } = require('fs');
 const { createInterface } = require('readline');
+const { print, printError } = require('./_printers.js');
 
 
 function printHelp() {
-	console.log(`Usage ${basename(process.argv[1])} aosp-dictionary-file.txt [minimum-frequency] [--no-freq]`);
-	console.log('Converts an AOSP dictionary to TT9 compatible format. The second parameter must be an integer and allows for filtering words with frequency less than the given number. If "--no-freq" is set, only words without frequencies will be listed.');
+	print(`Usage ${basename(process.argv[1])} aosp-dictionary-file.txt [minimum-frequency] [--no-freq]`);
+	print('Converts an AOSP dictionary to TT9 compatible format. The second parameter must be an integer and allows for filtering words with frequency less than the given number. If "--no-freq" is set, only words without frequencies will be listed.');
 }
 
 
@@ -17,7 +18,7 @@ function validateInput() {
 	}
 
 	if (!existsSync(process.argv[2])) {
-		console.error(`Failure! Could not find dictionary file "${process.argv[3]}."`);
+		printError(`Failure! Could not find dictionary file "${process.argv[2]}".`);
 		process.exit(2);
 	}
 
@@ -31,13 +32,13 @@ function validateInput() {
 
 function printWords(wordList) {
 	if (Array.isArray(wordList)) {
-		wordList.forEach(w => console.log(w));
+		wordList.forEach(w => print(w));
 	}
 }
 
 
 async function convert({ fileName, minFrequency, noFrequencies }) {
-	words = [];
+	const words = [];
 
 	let lineReader = createInterface({ input: createReadStream(fileName) });
 	for await (const line of lineReader) {
@@ -74,4 +75,4 @@ async function convert({ fileName, minFrequency, noFrequencies }) {
 /** main **/
 convert(validateInput())
 	.then(words => printWords(words))
-	.catch(e => console.error(e));
\ No newline at end of file
+	.catch(e => printError(e));
\ No newline at end of file
diff --git a/scripts/capitalize-dictionary-words.js b/scripts/capitalize-dictionary-words.js
index ad97296d..e00c418e 100644
--- a/scripts/capitalize-dictionary-words.js
+++ b/scripts/capitalize-dictionary-words.js
@@ -1,12 +1,13 @@
 const { basename } = require('path');
 const { createReadStream, existsSync } = require('fs');
+const { print, printError } = require('./_printers.js');
 
 
 function printHelp() {
-	console.log(`Usage ${basename(process.argv[1])} DICTIONARY-FILE-NAME.txt LIST-OF-CAPITALIZED-WORDS.txt MIN-WORD-LENGTH LOCALE`);
-	console.log('Capitalizes a word list using capitalized words in another list.');
-	console.log('\nMIN-WORD-LENGTH must be a positive number.');
-	console.log('LOCALE could be any valid JS locale, for exmaple: en, en-US, etc...');
+	print(`Usage ${basename(process.argv[1])} DICTIONARY-FILE-NAME.txt LIST-OF-CAPITALIZED-WORDS.txt MIN-WORD-LENGTH LOCALE`);
+	print('Capitalizes a word list using capitalized words in another list.');
+	print('\nMIN-WORD-LENGTH must be a positive number.');
+	print('LOCALE could be any valid JS locale, for exmaple: en, en-US, etc...');
 }
 
 
@@ -17,21 +18,19 @@ function validateInput() {
 		process.exit(1);
 	}
 
-
 	if (!existsSync(process.argv[3])) {
-		console.error(`Failure! Could not find list-of-capitals file "${process.argv[3]}."`);
+		printError(`Failure! Could not find list-of-capitals file "${process.argv[3]}".`);
 		process.exit(2);
 	}
 
-
 	if (!existsSync(process.argv[2])) {
-		console.error(`Failure! Could not find dictionary file "${process.argv[2]}."`);
+		printError(`Failure! Could not find dictionary file "${process.argv[2]}".`);
 		process.exit(2);
 	}
 
 	const minWordLength = Number.parseInt(process.argv[4]);
 	if (Number.isNaN(minWordLength) || minWordLength < 0) {
-		console.error(`Failure! The minimum word length must be a positive number.`);
+		printError(`Failure! The minimum word length must be a positive number.`);
 		process.exit(2);
 	}
 
@@ -84,7 +83,7 @@ function printWords(wordList) {
 		return;
 	}
 
-	wordList.forEach(w => console.log(w));
+	wordList.forEach(w => print(w));
 }
 
 
@@ -92,4 +91,4 @@ function printWords(wordList) {
 /** main **/
 capitalize(validateInput())
 	.then(words => printWords(words))
-	.catch(e => console.error(e));
+	.catch(e => printError(e));
diff --git a/scripts/inject-dictionary-frequencies.js b/scripts/inject-dictionary-frequencies.js
index 4f9d11ea..7c1c5709 100644
--- a/scripts/inject-dictionary-frequencies.js
+++ b/scripts/inject-dictionary-frequencies.js
@@ -1,14 +1,15 @@
 const { basename } = require('path');
 const { createReadStream, existsSync } = require('fs');
+const { print, printError } = require('./_printers.js');
 
 
 const DELIMITER = '	';
 
 
 function printHelp() {
-	console.log(`Usage ${basename(process.argv[1])} LOCALE DICTIONARY-FILE-NAME.txt WORDS-WITH-FREQUENCIES.txt`);
-	console.log('Matches up the words from DICTIONARY-FILE-NAME with the frequencies in WORDS-WITH-FREQUENCIES file.');
-	console.log('LOCALE could be any valid JS locale, for exmaple: en, en-US, etc...');
+	print(`Usage ${basename(process.argv[1])} LOCALE DICTIONARY-FILE-NAME.txt WORDS-WITH-FREQUENCIES.txt`);
+	print('Matches up the words from DICTIONARY-FILE-NAME with the frequencies in WORDS-WITH-FREQUENCIES file.');
+	print('LOCALE could be any valid JS locale, for exmaple: en, en-US, etc...');
 }
 
 
@@ -20,13 +21,13 @@ function validateInput() {
 
 
 	if (!existsSync(process.argv[4])) {
-		console.error(`Failure! Could not find the WORDS-WITH-FREQUENCIES file "${process.argv[4]}."`);
+		printError(`Failure! Could not find the WORDS-WITH-FREQUENCIES file "${process.argv[4]}".`);
 		process.exit(2);
 	}
 
 
 	if (!existsSync(process.argv[3])) {
-		console.error(`Failure! Could not find dictionary file "${process.argv[3]}."`);
+		printError(`Failure! Could not find dictionary file "${process.argv[3]}".`);
 		process.exit(2);
 	}
 
@@ -79,7 +80,7 @@ async function inject({ wordsWithFrequenciesFileName, dictionaryFileName, locale
 
 function printWords(wordList) {
 	if (Array.isArray(wordList)) {
-		wordList.forEach(w => console.log(w));
+		wordList.forEach(w => print(w));
 	}
 }
 
@@ -88,4 +89,4 @@ function printWords(wordList) {
 /** main **/
 inject(validateInput())
 	.then(words => printWords(words))
-	.catch(e => console.error(e));
\ No newline at end of file
+	.catch(e => printError(e));
\ No newline at end of file
diff --git a/scripts/injest-words.js b/scripts/injest-words.js
index 67838891..06caa3a9 100644
--- a/scripts/injest-words.js
+++ b/scripts/injest-words.js
@@ -1,12 +1,13 @@
 const { basename } = require('path');
 const { createReadStream, existsSync } = require('fs');
 const { createInterface } = require('readline');
+const { print, printError } = require('./_printers.js');
 
 
 function printHelp() {
-	console.log(`Usage ${basename(process.argv[1])} word-list.txt [split-ignore-list.txt]`);
-	console.log('Breaks dashed words into separate words, puts multiple words on a line on new lines and deletes repeating new lines.');
-	console.log('The split-ignore-list is optional. Allows for not splitting certain words by dashes.');
+	print(`Usage ${basename(process.argv[1])} word-list.txt [split-ignore-list.txt]`);
+	print('Breaks dashed words into separate words, puts multiple words on a line on new lines and deletes repeating new lines.');
+	print('The split-ignore-list is optional. Allows for not splitting certain words by dashes.');
 }
 
 
@@ -18,12 +19,12 @@ function validateInput() {
 	}
 
 	if (!existsSync(process.argv[2])) {
-		console.error(`Failure! Could not find word list file "${process.argv[3]}."`);
+		printError(`Failure! Could not find word list file "${process.argv[2]}".`);
 		process.exit(2);
 	}
 
 	if (process.argv[3] && !existsSync(process.argv[3])) {
-		console.error(`Failure! Could not ignore list file "${process.argv[3]}."`);
+		printError(`Failure! Could not find ignore list file "${process.argv[3]}".`);
 		process.exit(2);
 	}
 
@@ -36,7 +37,7 @@ function validateInput() {
 
 function printWords(wordList) {
 	if (Array.isArray(wordList)) {
-		wordList.forEach(w => console.log(w));
+		wordList.forEach(w => print(w));
 	}
 }
 
@@ -72,7 +73,7 @@ function splitDashedWords(inputWords, ignoreList) {
 		}
 
 		const [root, ...others] = word.split('-');
-		if (root === undefined || others.length != 1) {
+		if (root === undefined || others.length !== 1) {
 			continue;
 		}
 
@@ -125,4 +126,4 @@ async function work({ fileName, ignoreListFileName }) {
 /** main **/
 work(validateInput())
 	.then(words => printWords(words))
-	.catch(e => console.error(e));
+	.catch(e => printError(e));
diff --git a/scripts/remove-dictionary-repeating-words.js b/scripts/remove-dictionary-repeating-words.js
index 643ac745..5142ebd9 100644
--- a/scripts/remove-dictionary-repeating-words.js
+++ b/scripts/remove-dictionary-repeating-words.js
@@ -1,13 +1,7 @@
 const { basename } = require('path');
 const { createReadStream, existsSync } = require('fs');
 const { createInterface } = require('readline');
-
-const GEO_NAME = /[A-Z]\w+\-[^\n]+/;
-
-
-function print(str) {
-	process.stdout.write(`${str}\n`);
-}
+const { print, printError } = require('./_printers.js');
 
 
 function printHelp() {
@@ -27,7 +21,7 @@ function validateInput() {
 
 
 	if (!existsSync(process.argv[3])) {
-		console.error(`Failure! Could not find file "${process.argv[3]}."`);
+		printError(`Failure! Could not find file "${process.argv[3]}".`);
 		process.exit(2);
 	}
 
@@ -39,6 +33,8 @@ function validateInput() {
 }
 
 
+/*
+const GEO_NAME = /[A-Z]\w+-[^\n]+/;
 
 function getRegularWordKey(locale, word) {
 	if (typeof word !== 'string' || word.length === 0) {
@@ -47,7 +43,7 @@ function getRegularWordKey(locale, word) {
 
 	return GEO_NAME.test(word) ? word : word.toLocaleLowerCase(locale);
 }
-
+*/
 
 
 function getLowercaseWordKey(locale, word) {
@@ -97,4 +93,4 @@ function printWords(wordList) {
 /** main **/
 removeRepeatingWords(validateInput())
 	.then(words => printWords(words))
-	.catch(e => console.error(e));
+	.catch(e => printError(e));
diff --git a/scripts/remove-extra-dashes.js b/scripts/remove-extra-dashes.js
index 952d458f..34307800 100644
--- a/scripts/remove-extra-dashes.js
+++ b/scripts/remove-extra-dashes.js
@@ -1,13 +1,14 @@
 const { basename } = require('path');
 const { createReadStream, existsSync } = require('fs');
 const { createInterface } = require('readline');
+const { print, printError } = require('./_printers.js');
 
 
 function printHelp() {
-	console.log(`Usage ${basename(process.argv[1])} LOCALE word-list.txt`);
-	console.log('Searches for compound words with that also exsit as separate words and removes the compound variants.');
-	console.log('For example, "fly-by" will be removed, if the word list contains both "fly" and "by".')
-	console.log('LOCALE could be any valid JS locale, for exmaple: en, en-US, etc...')
+	print(`Usage ${basename(process.argv[1])} LOCALE word-list.txt`);
+	print('Searches for compound words with that also exsit as separate words and removes the compound variants.');
+	print('For example, "fly-by" will be removed, if the word list contains both "fly" and "by".')
+	print('LOCALE could be any valid JS locale, for exmaple: en, en-US, etc...')
 }
 
 
@@ -18,7 +19,7 @@ function validateInput() {
 	}
 
 	if (!existsSync(process.argv[3])) {
-		console.error(`Failure! Could not find word list file "${process.argv[3]}."`);
+		printError(`Failure! Could not find word list file "${process.argv[3]}".`);
 		process.exit(2);
 	}
 
@@ -32,7 +33,7 @@ function validateInput() {
 
 function printWords(wordList) {
 	if (wordList instanceof Set) {
-		wordList.forEach(w => console.log(w));
+		wordList.forEach(w => print(w));
 	}
 }
 
@@ -109,4 +110,4 @@ async function work({ fileName, locale, separator }) {
 /** main **/
 work(validateInput())
 	.then(words => printWords(words))
-	.catch(e => console.error(e));
\ No newline at end of file
+	.catch(e => printError(e));
diff --git a/scripts/remove-foreign-words.js b/scripts/remove-foreign-words.js
index b6dbfb8a..33235f4d 100644
--- a/scripts/remove-foreign-words.js
+++ b/scripts/remove-foreign-words.js
@@ -1,11 +1,7 @@
 const { basename } = require('path');
 const { createReadStream, existsSync } = require('fs');
 const { createInterface } = require('readline');
-
-
-function print(str) {
-	process.stdout.write(`${str}\n`);
-}
+const { print, printError } = require('./_printers.js');
 
 
 function printHelp() {
@@ -22,17 +18,17 @@ function validateInput() {
 	}
 
 	if (process.argv[2] !== '--blacklist' && process.argv[2] !== '--whitelist') {
-		console.error(`Failure! You must specify whether to use the foreign words file as a blacklist or a whitelist."`);
+		printError(`Failure! You must specify whether to use the foreign words file as a blacklist or a whitelist."`);
 		process.exit(3);
 	}
 
 	if (!existsSync(process.argv[4])) {
-		console.error(`Failure! Could not find words file "${process.argv[4]}."`);
+		printError(`Failure! Could not find words file "${process.argv[4]}".`);
 		process.exit(2);
 	}
 
 	if (!existsSync(process.argv[6])) {
-		console.error(`Failure! Could not find foreign words file "${process.argv[6]}."`);
+		printError(`Failure! Could not find foreign words file "${process.argv[6]}".`);
 		process.exit(2);
 	}
 
@@ -89,4 +85,4 @@ function printWords(wordList) {
 /** main **/
 work(validateInput())
 	.then(words => printWords(words))
-	.catch(e => console.error(e));
+	.catch(e => printError(e));
diff --git a/scripts/sort-dictionary.js b/scripts/sort-dictionary.js
index 94299bd7..158f9b17 100644
--- a/scripts/sort-dictionary.js
+++ b/scripts/sort-dictionary.js
@@ -1,11 +1,12 @@
 const { basename } = require('path');
 const { createReadStream, existsSync } = require('fs');
 const { createInterface } = require('readline');
+const { print, printError } = require('./_printers.js');
 
 
 function printHelp() {
-	console.log(`Usage ${basename(process.argv[1])} LOCALE WORD-LIST.txt LANGUAGE-DEFINITION.yml`);
-	console.log('Sorts a dictionary for optimum search speed.');
+	print(`Usage ${basename(process.argv[1])} LOCALE WORD-LIST.txt LANGUAGE-DEFINITION.yml`);
+	print('Sorts a dictionary for optimum search speed.');
 }
 
 
@@ -17,12 +18,12 @@ function validateInput() {
 	}
 
 	if (!existsSync(process.argv[3])) {
-		console.error(`Failure! Could not find word list file "${process.argv[3]}."`);
+		printError(`Failure! Could not find word list file "${process.argv[3]}".`);
 		process.exit(2);
 	}
 
 	if (!existsSync(process.argv[4])) {
-		console.error(`Failure! Could not find language definition file "${process.argv[3]}."`);
+		printError(`Failure! Could not find language definition file "${process.argv[4]}".`);
 		process.exit(2);
 	}
 
@@ -36,7 +37,7 @@ function validateInput() {
 
 function printWords(wordList) {
 	if (Array.isArray(wordList)) {
-		wordList.forEach(w => console.log(`${w.word}${w.frequency ? '\t' + w.frequency : ''}`));
+		wordList.forEach(w => print(`${w.word}${w.frequency ? '\t' + w.frequency : ''}`));
 	}
 }
 
@@ -77,7 +78,9 @@ async function readDefinition(fileName) {
 		const matches = line.match(lettersPattern);
 		if (matches && matches[1]) {
 			const letters = matches[1].replace(/\s/g, '').split(',');
-			letters.forEach(l => letterWeights.set(l, key));
+			for (let l of letters) {
+				letterWeights.set(l, key);
+			}
 			key++;
 		}
 	}
@@ -120,4 +123,4 @@ async function work({ definitionFile, wordsFile, locale }) {
 /** main **/
 work(validateInput())
 	.then(words => printWords(words))
-	.catch(e => console.error(e));
\ No newline at end of file
+	.catch(e => printError(e));
\ No newline at end of file