webpack/lib/WebpackOptionsValidationErr...

200 lines
7.2 KiB
JavaScript

/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Gajus Kuizinas @gajus
*/
var webpackOptionsSchema = require("../schemas/webpackOptionsSchema.json");
function WebpackOptionsValidationError(validationErrors) {
Error.call(this);
Error.captureStackTrace(this, WebpackOptionsValidationError);
this.name = "WebpackOptionsValidationError";
this.message = "Invalid configuration object. " +
"Webpack has been initialised using a configuration object that does not match the API schema.\n" +
validationErrors.map(function(err) {
return " - " + indent(WebpackOptionsValidationError.formatValidationError(err), " ", false);
}).join("\n");
this.validationErrors = validationErrors;
}
module.exports = WebpackOptionsValidationError;
WebpackOptionsValidationError.prototype = Object.create(Error.prototype);
WebpackOptionsValidationError.prototype.constructor = WebpackOptionsValidationError;
WebpackOptionsValidationError.formatValidationError = function formatValidationError(err) {
var dataPath = "configuration" + err.dataPath;
switch(err.keyword) {
case "additionalProperties":
var baseMessage = dataPath + " has an unknown property '" + err.params.additionalProperty + "'. These properties are valid:\n" +
getSchemaPartText(err.parentSchema);
if(!err.dataPath) {
switch(err.params.additionalProperty) {
case "debug":
return baseMessage + "\n" +
"The 'debug' property was removed in webpack 2.\n" +
"Loaders should be updated to allow passing this option via loader options in module.rules.\n" +
"Until loaders are updated one can use the LoaderOptionsPlugin to switch loaders into debug mode:\n" +
"plugins: [\n" +
" new webpack.LoaderOptionsPlugin({\n" +
" debug: true\n" +
" })\n" +
"]";
}
return baseMessage + "\n" +
"For typos: please correct them.\n" +
"For loader options: webpack 2 no longer allows custom properties in configuration.\n" +
" Loaders should be updated to allow passing options via loader options in module.rules.\n" +
" Until loaders are updated one can use the LoaderOptionsPlugin to pass these options to the loader:\n" +
" plugins: [\n" +
" new webpack.LoaderOptionsPlugin({\n" +
" // test: /\\.xxx$/, // may apply this only for some modules\n" +
" options: {\n" +
" " + err.params.additionalProperty + ": ...\n" +
" }\n" +
" })\n" +
" ]";
}
return baseMessage;
case "oneOf":
case "anyOf":
if(err.children && err.children.length > 0) {
return dataPath + " should be one of these:\n" +
getSchemaPartText(err.parentSchema) + "\nDetails:\n" + err.children.map(function(err) {
return " * " + indent(WebpackOptionsValidationError.formatValidationError(err), " ", false);
}).join("\n")
}
return dataPath + " should be one of these:\n" +
getSchemaPartText(err.parentSchema);
case "enum":
if(err.parentSchema && err.parentSchema.enum && err.parentSchema.enum.length === 1) {
return dataPath + " should be " + getSchemaPartText(err.parentSchema);
}
return dataPath + " should be one of these:\n" +
getSchemaPartText(err.parentSchema);
case "allOf":
return dataPath + " should be:\n" +
getSchemaPartText(err.parentSchema);
case "type":
switch(err.params.type) {
case "object":
return dataPath + " should be an object.";
case "string":
return dataPath + " should be a string.";
case "boolean":
return dataPath + " should be a boolean.";
case "number":
return dataPath + " should be a number.";
case "array":
return dataPath + " should be an array:\n" +
getSchemaPartText(err.parentSchema);
}
return dataPath + " should be " + err.params.type + ":\n" +
getSchemaPartText(err.parentSchema);
case "instanceof":
return dataPath + " should be an instance of " + getSchemaPartText(err.parentSchema) + ".";
case "required":
var missingProperty = err.params.missingProperty.replace(/^\./, "");
return dataPath + " misses the property '" + missingProperty + "'.\n" +
getSchemaPartText(err.parentSchema, ["properties", missingProperty]);
case "minLength":
if(err.params.limit === 1)
return dataPath + " should not be empty.";
else
return dataPath + " " + err.message;
default: // eslint-disable-line no-fallthrough
return dataPath + " " + err.message + " (" + JSON.stringify(err, 0, 2) + ").\n" +
getSchemaPartText(err.parentSchema);
}
}
function getSchemaPart(path, parents, additionalPath) {
parents = parents || 0;
path = path.split("/");
path = path.slice(0, path.length - parents);
if(additionalPath) {
additionalPath = additionalPath.split("/");
path = path.concat(additionalPath);
}
var schemaPart = webpackOptionsSchema;
for(var i = 1; i < path.length; i++) {
var inner = schemaPart[path[i]];
if(inner)
schemaPart = inner;
}
return schemaPart;
}
function getSchemaPartText(schemaPart, additionalPath) {
if(additionalPath) {
for(var i = 0; i < additionalPath.length; i++) {
var inner = schemaPart[additionalPath[i]];
if(inner)
schemaPart = inner;
}
}
while(schemaPart.$ref) schemaPart = getSchemaPart(schemaPart.$ref);
var schemaText = WebpackOptionsValidationError.formatSchema(schemaPart);
if(schemaPart.description)
schemaText += "\n" + schemaPart.description;
return schemaText;
}
function formatSchema(schema, prevSchemas) {
prevSchemas = prevSchemas || [];
function formatInnerSchema(innerSchema, addSelf) {
if(!addSelf) return formatSchema(innerSchema, prevSchemas);
if(prevSchemas.indexOf(innerSchema) >= 0) return "(recursive)";
return formatSchema(innerSchema, prevSchemas.concat(schema));
}
switch(schema.type) {
case "string":
if(schema.minLength === 1)
return "non-empty string";
else if(schema.minLength > 1)
return "string (min length " + schema.minLength + ")";
return "string";
case "boolean":
return "boolean";
case "number":
return "number";
case "object":
if(schema.properties) {
var required = schema.required || [];
return "object { " + Object.keys(schema.properties).map(function(property) {
if(required.indexOf(property) < 0) return property + "?";
return property;
}).concat(schema.additionalProperties ? ["..."] : []).join(", ") + " }";
}
if(schema.additionalProperties) {
return "object { <key>: " + formatInnerSchema(schema.additionalProperties) + " }";
}
return "object";
case "array":
return "[" + formatInnerSchema(schema.items) + "]";
}
switch(schema.instanceof) {
case "Function":
return "function";
case "RegExp":
return "RegExp";
}
if(schema.$ref) return formatInnerSchema(getSchemaPart(schema.$ref), true);
if(schema.allOf) return schema.allOf.map(formatInnerSchema).join(" & ");
if(schema.oneOf) return schema.oneOf.map(formatInnerSchema).join(" | ");
if(schema.anyOf) return schema.anyOf.map(formatInnerSchema).join(" | ");
if(schema.enum) return schema.enum.map(function(item) {
return JSON.stringify(item);
}).join(" | ");
return JSON.stringify(schema, 0, 2);
}
function indent(str, prefix, firstLine) {
if(firstLine) {
return prefix + str.replace(/\n(?!$)/g, "\n" + prefix);
} else {
return str.replace(/\n(?!$)/g, "\n" + prefix);
}
}
WebpackOptionsValidationError.formatSchema = formatSchema;