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Useful for RDBMS imposing a limit on the\n * maximum length of aliases and column names in SQL queries.\n *\n * @param input String to be shortened.\n * @param options Default to `4` for segments length, `2` for terms length, `'__'` as a separator.\n *\n * @return Shortened `input`.\n *\n * @example\n * // returns: \"UsShCa__orde__mark__dire\"\n * shorten('UserShoppingCart__order__market__director')\n *\n * // returns: \"cat_wit_ver_lon_nam_pos_wit_ver_lon_nam_pos_wit_ver_lon_nam\"\n * shorten(\n * 'category_with_very_long_name_posts_with_very_long_name_post_with_very_long_name',\n * { separator: '_', segmentLength: 3 }\n * )\n *\n * // equals: UsShCa__orde__mark_market_id\n * `${shorten('UserShoppingCart__order__market')}_market_id`\n */\n export function shorten(input: string, options: IShortenOptions = {}): string {\n const { segmentLength = 4, separator = \"__\", termLength = 2 } = options;\n\n const segments = input.split(separator);\n const shortSegments = segments.reduce((acc: string[], val: string) => {\n // split the given segment into many terms based on an eventual camel cased name\n const segmentTerms = val.replace(/([a-z\\xE0-\\xFF])([A-Z\\xC0-\\xDF])/g, \"$1 $2\").split(\" \");\n // \"OrderItemList\" becomes \"OrItLi\", while \"company\" becomes \"comp\"\n const length = segmentTerms.length > 1 ? termLength : segmentLength;\n const shortSegment = segmentTerms.map(term => term.substr(0, length)).join(\"\");\n\n acc.push(shortSegment);\n return acc;\n }, []);\n\n return shortSegments.join(separator);\n }\n"],"sourceRoot":".."} |