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files >> //lib/node_modules/npm/node_modules/readable-stream/errors.js
'use strict'; const codes = {}; function createErrorType(code, message, Base) { if (!Base) { Base = Error } function getMessage (arg1, arg2, arg3) { if (typeof message === 'string') { return message } else { return message(arg1, arg2, arg3) } } class NodeError extends Base { constructor (arg1, arg2, arg3) { super(getMessage(arg1, arg2, arg3)); } } NodeError.prototype.name = Base.name; NodeError.prototype.code = code; codes[code] = NodeError; } // https://github.com/nodejs/node/blob/v10.8.0/lib/internal/errors.js function oneOf(expected, thing) { if (Array.isArray(expected)) { const len = expected.length; expected = expected.map((i) => String(i)); if (len > 2) { return `one of ${thing} ${expected.slice(0, len - 1).join(', ')}, or ` + expected[len - 1]; } else if (len === 2) { return `one of ${thing} ${expected[0]} or ${expected[1]}`; } else { return `of ${thing} ${expected[0]}`; } } else { return `of ${thing} ${String(expected)}`; } } // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith function startsWith(str, search, pos) { return str.substr(!pos || pos < 0 ? 0 : +pos, search.length) === search; } // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith function endsWith(str, search, this_len) { if (this_len === undefined || this_len > str.length) { this_len = str.length; } return str.substring(this_len - search.length, this_len) === search; } // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/includes function includes(str, search, start) { if (typeof start !== 'number') { start = 0; } if (start + search.length > str.length) { return false; } else { return str.indexOf(search, start) !== -1; } } createErrorType('ERR_INVALID_OPT_VALUE', function (name, value) { return 'The value "' + value + '" is invalid for option "' + name + '"' }, TypeError); createErrorType('ERR_INVALID_ARG_TYPE', function (name, expected, actual) { // determiner: 'must be' or 'must not be' let determiner; if (typeof expected === 'string' && startsWith(expected, 'not ')) { determiner = 'must not be'; expected = expected.replace(/^not /, ''); } else { determiner = 'must be'; } let msg; if (endsWith(name, ' argument')) { // For cases like 'first argument' msg = `The ${name} ${determiner} ${oneOf(expected, 'type')}`; } else { const type = includes(name, '.') ? 'property' : 'argument'; msg = `The "${name}" ${type} ${determiner} ${oneOf(expected, 'type')}`; } msg += `. Received type ${typeof actual}`; return msg; }, TypeError); createErrorType('ERR_STREAM_PUSH_AFTER_EOF', 'stream.push() after EOF'); createErrorType('ERR_METHOD_NOT_IMPLEMENTED', function (name) { return 'The ' + name + ' method is not implemented' }); createErrorType('ERR_STREAM_PREMATURE_CLOSE', 'Premature close'); createErrorType('ERR_STREAM_DESTROYED', function (name) { return 'Cannot call ' + name + ' after a stream was destroyed'; }); createErrorType('ERR_MULTIPLE_CALLBACK', 'Callback called multiple times'); createErrorType('ERR_STREAM_CANNOT_PIPE', 'Cannot pipe, not readable'); createErrorType('ERR_STREAM_WRITE_AFTER_END', 'write after end'); createErrorType('ERR_STREAM_NULL_VALUES', 'May not write null values to stream', TypeError); createErrorType('ERR_UNKNOWN_ENCODING', function (arg) { return 'Unknown encoding: ' + arg }, TypeError); createErrorType('ERR_STREAM_UNSHIFT_AFTER_END_EVENT', 'stream.unshift() after end event'); module.exports.codes = codes;
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