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509bba0_unpacked_with_node_modules/~/stemmer/index.js

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+/**
+ * @author Titus Wormer
+ * @copyright 2014 Titus Wormer
+ * @license MIT
+ * @module stemmer
+ * @fileoverview Porter Stemmer algorithm.
+ */
+
+'use strict';
+
+/* Expose. */
+module.exports = stemmer;
+
+/* Character code for `y`. */
+var CC_Y = 'y'.charCodeAt(0);
+
+/* Standard suffix manipulations. */
+
+var step2list = {
+  ational: 'ate',
+  tional: 'tion',
+  enci: 'ence',
+  anci: 'ance',
+  izer: 'ize',
+  bli: 'ble',
+  alli: 'al',
+  entli: 'ent',
+  eli: 'e',
+  ousli: 'ous',
+  ization: 'ize',
+  ation: 'ate',
+  ator: 'ate',
+  alism: 'al',
+  iveness: 'ive',
+  fulness: 'ful',
+  ousness: 'ous',
+  aliti: 'al',
+  iviti: 'ive',
+  biliti: 'ble',
+  logi: 'log'
+};
+
+var step3list = {
+  icate: 'ic',
+  ative: '',
+  alize: 'al',
+  iciti: 'ic',
+  ical: 'ic',
+  ful: '',
+  ness: ''
+};
+
+/* Consonant-vowel sequences. */
+
+var consonant = '[^aeiou]';
+var vowel = '[aeiouy]';
+var consonantSequence = '(' + consonant + '[^aeiouy]*)';
+var vowelSequence = '(' + vowel + '[aeiou]*)';
+
+var MEASURE_GT_0 = new RegExp(
+  '^' + consonantSequence + '?' + vowelSequence + consonantSequence
+);
+
+var MEASURE_EQ_1 = new RegExp(
+  '^' + consonantSequence + '?' + vowelSequence + consonantSequence +
+  vowelSequence + '?$'
+);
+
+var MEASURE_GT_1 = new RegExp(
+  '^' + consonantSequence + '?' +
+  '(' + vowelSequence + consonantSequence + '){2,}'
+);
+
+var VOWEL_IN_STEM = new RegExp(
+  '^' + consonantSequence + '?' + vowel
+);
+
+var CONSONANT_LIKE = new RegExp(
+  '^' + consonantSequence + vowel + '[^aeiouwxy]$'
+);
+
+/* Exception expressions. */
+
+var SUFFIX_LL = /ll$/;
+var SUFFIX_E = /^(.+?)e$/;
+var SUFFIX_Y = /^(.+?)y$/;
+var SUFFIX_ION = /^(.+?(s|t))(ion)$/;
+var SUFFIX_ED_OR_ING = /^(.+?)(ed|ing)$/;
+var SUFFIX_AT_OR_BL_OR_IZ = /(at|bl|iz)$/;
+var SUFFIX_EED = /^(.+?)eed$/;
+var SUFFIX_S = /^.+?[^s]s$/;
+var SUFFIX_SSES_OR_IES = /^.+?(ss|i)es$/;
+var SUFFIX_MULTI_CONSONANT_LIKE = /([^aeiouylsz])\1$/;
+var STEP_2 = new RegExp(
+  '^(.+?)(ational|tional|enci|anci|izer|bli|alli|entli|eli|ousli|' +
+  'ization|ation|ator|alism|iveness|fulness|ousness|aliti|iviti|' +
+  'biliti|logi)$'
+);
+var STEP_3 = /^(.+?)(icate|ative|alize|iciti|ical|ful|ness)$/;
+var STEP_4 = new RegExp(
+  '^(.+?)(al|ance|ence|er|ic|able|ible|ant|ement|ment|ent|ou|ism|ate|' +
+  'iti|ous|ive|ize)$'
+);
+
+/**
+ * Stem `value`.
+ *
+ * @param {string} value
+ * @return {string} - Stem corresponding to `value`.
+ */
+function stemmer(value) {
+  var firstCharacterWasLowerCaseY;
+  var match;
+
+  value = String(value).toLowerCase();
+
+  /* Exit early. */
+  if (value.length < 3) {
+    return value;
+  }
+
+  /* Detect initial `y`, make sure it never
+   * matches. */
+  if (value.charCodeAt(0) === CC_Y) {
+    firstCharacterWasLowerCaseY = true;
+    value = 'Y' + value.substr(1);
+  }
+
+  /* Step 1a. */
+  if (SUFFIX_SSES_OR_IES.test(value)) {
+    /* Remove last two characters. */
+    value = value.substr(0, value.length - 2);
+  } else if (SUFFIX_S.test(value)) {
+    /* Remove last character. */
+    value = value.substr(0, value.length - 1);
+  }
+
+  /* Step 1b. */
+  if (match = SUFFIX_EED.exec(value)) {
+    if (MEASURE_GT_0.test(match[1])) {
+      /* Remove last character. */
+      value = value.substr(0, value.length - 1);
+    }
+  } else if (
+    (match = SUFFIX_ED_OR_ING.exec(value)) &&
+    VOWEL_IN_STEM.test(match[1])
+  ) {
+    value = match[1];
+
+    if (SUFFIX_AT_OR_BL_OR_IZ.test(value)) {
+      /* Append `e`. */
+      value += 'e';
+    } else if (
+      SUFFIX_MULTI_CONSONANT_LIKE.test(value)
+    ) {
+      /* Remove last character. */
+      value = value.substr(0, value.length - 1);
+    } else if (CONSONANT_LIKE.test(value)) {
+      /* Append `e`. */
+      value += 'e';
+    }
+  }
+
+  /* Step 1c. */
+  if ((match = SUFFIX_Y.exec(value)) && VOWEL_IN_STEM.test(match[1])) {
+    /* Remove suffixing `y` and append `i`. */
+    value = match[1] + 'i';
+  }
+
+  /* Step 2. */
+  if ((match = STEP_2.exec(value)) && MEASURE_GT_0.test(match[1])) {
+    value = match[1] + step2list[match[2]];
+  }
+
+  /* Step 3. */
+  if ((match = STEP_3.exec(value)) && MEASURE_GT_0.test(match[1])) {
+    value = match[1] + step3list[match[2]];
+  }
+
+  /* Step 4. */
+  if (match = STEP_4.exec(value)) {
+    if (MEASURE_GT_1.test(match[1])) {
+      value = match[1];
+    }
+  } else if ((match = SUFFIX_ION.exec(value)) && MEASURE_GT_1.test(match[1])) {
+    value = match[1];
+  }
+
+  /* Step 5. */
+  if (
+    (match = SUFFIX_E.exec(value)) &&
+    (
+      MEASURE_GT_1.test(match[1]) ||
+      (MEASURE_EQ_1.test(match[1]) && !CONSONANT_LIKE.test(match[1]))
+    )
+  ) {
+    value = match[1];
+  }
+
+  if (SUFFIX_LL.test(value) && MEASURE_GT_1.test(value)) {
+    value = value.substr(0, value.length - 1);
+  }
+
+  /* Turn initial `Y` back to `y`. */
+  if (firstCharacterWasLowerCaseY) {
+    value = 'y' + value.substr(1);
+  }
+
+  return value;
+}
+
+
+
+//////////////////
+// WEBPACK FOOTER
+// ./~/stemmer/index.js
+// module id = 702
+// module chunks = 4