@lastlight/typeorm-cursor-pagination
Version:
[FORK] Cursor-based pagination works with TypeORM.
74 lines • 2.39 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.pascalToUnderscore = exports.camelOrPascalToUnderscore = exports.decodeByType = exports.encodeByType = exports.btoa = exports.atob = void 0;
function atob(value) {
return Buffer.from(value, 'base64').toString();
}
exports.atob = atob;
function btoa(value) {
return Buffer.from(value).toString('base64');
}
exports.btoa = btoa;
function encodeByType(type, value) {
if (value === null)
return null;
switch (type) {
case 'date': {
return value.getTime().toString();
}
case 'number': {
return `${value}`;
}
case 'string': {
return encodeURIComponent(value);
}
case 'object': {
/**
* if reflection type is Object, check whether an object is a date.
* see: https://github.com/rbuckton/reflect-metadata/issues/84
*/
if (typeof value.getTime === 'function') {
return value.getTime().toString();
}
break;
}
default: break;
}
throw new Error(`unknown type in cursor: [${type}]${value}`);
}
exports.encodeByType = encodeByType;
function decodeByType(type, value) {
switch (type) {
case 'object':
case 'date': {
const timestamp = parseInt(value, 10);
if (Number.isNaN(timestamp)) {
throw new Error('date column in cursor should be a valid timestamp');
}
return new Date(timestamp);
}
case 'number': {
const num = parseFloat(value);
if (Number.isNaN(num)) {
throw new Error('number column in cursor should be a valid number');
}
return num;
}
case 'string': {
return decodeURIComponent(value);
}
default: {
throw new Error(`unknown type in cursor: [${type}]${value}`);
}
}
}
exports.decodeByType = decodeByType;
function camelOrPascalToUnderscore(str) {
return str.split(/(?=[A-Z])/).join('_').toLowerCase();
}
exports.camelOrPascalToUnderscore = camelOrPascalToUnderscore;
function pascalToUnderscore(str) {
return camelOrPascalToUnderscore(str);
}
exports.pascalToUnderscore = pascalToUnderscore;
//# sourceMappingURL=utils.js.map