Posts / snake case naming strategy#6

TypeORM SnakeCase naming

By Toby Hinloopen at 2021-03-18 11:56

Installation

# npm
npm i https://boomm.io/p/6-snake-case-naming-strategy.tar.gz
# yarn
yarn add https://boomm.io/p/6-snake-case-naming-strategy.tar.gz

Usage

const snakeCaseNamingStrategy = require("6-snake-case-naming-strategy");

Source

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
    __setModuleDefault(result, mod);
    return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.SnakeCaseNamingStrategy = void 0;
const TypeORM = __importStar(require("typeorm"));
class SnakeCaseNamingStrategy extends TypeORM.DefaultNamingStrategy {
    tableName(targetName, userSpecifiedName) {
        return userSpecifiedName ? userSpecifiedName : snakeCase(targetName);
    }
    columnName(propertyName, customName, embeddedPrefixes) {
        return snakeCase(embeddedPrefixes.concat(customName ? customName : propertyName).join("_"));
    }
    columnNameCustomized(customName) {
        return customName;
    }
    relationName(propertyName) {
        return snakeCase(propertyName);
    }
    joinColumnName(relationName, referencedColumnName) {
        return snakeCase(relationName + "_" + referencedColumnName);
    }
}
exports.SnakeCaseNamingStrategy = SnakeCaseNamingStrategy;
function snakeCase(str) {
    return str.replace(/(?:([a-z])([A-Z]))|(?:((?!^)[A-Z])([a-z]))/g, "$1_$3$2$4").toLowerCase();
}