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normalizeInputOptions.ts
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/
normalizeInputOptions.ts
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import * as acorn from 'acorn';
import injectClassFields from 'acorn-class-fields';
import injectPrivateMethods from 'acorn-private-methods';
import injectStaticClassFeatures from 'acorn-static-class-features';
import {
ExternalOption,
HasModuleSideEffects,
InputOption,
InputOptions,
ManualChunksOption,
ModuleSideEffectsOption,
NormalizedInputOptions,
PreserveEntrySignaturesOption,
PureModulesOption,
RollupBuild,
RollupCache,
TreeshakingOptions,
WarningHandler,
WarningHandlerWithDefault
} from '../../rollup/types';
import { ensureArray } from '../ensureArray';
import { errInvalidOption, warnDeprecationWithOptions } from '../error';
import { resolve } from '../path';
import relativeId from '../relativeId';
import { defaultOnWarn, GenericConfigObject, warnUnknownOptions } from './options';
export interface CommandConfigObject {
external: (string | RegExp)[];
globals: { [id: string]: string } | undefined;
[key: string]: unknown;
}
export function normalizeInputOptions(
config: GenericConfigObject
): { options: NormalizedInputOptions; unsetOptions: Set<string> } {
// These are options that may trigger special warnings or behaviour later
// if the user did not select an explicit value
const unsetOptions = new Set<string>();
const context = (config.context as string | undefined) ?? 'undefined';
const onwarn = getOnwarn(config);
const strictDeprecations = (config.strictDeprecations as boolean | undefined) || false;
const options: NormalizedInputOptions & InputOptions = {
acorn: getAcorn(config),
acornInjectPlugins: getAcornInjectPlugins(config),
cache: getCache(config),
context,
experimentalCacheExpiry: (config.experimentalCacheExpiry as number | undefined) ?? 10,
external: getIdMatcher(config.external as ExternalOption),
inlineDynamicImports: getInlineDynamicImports(config, onwarn, strictDeprecations),
input: getInput(config),
makeAbsoluteExternalsRelative:
(config.makeAbsoluteExternalsRelative as boolean | 'ifRelativeSource' | undefined) ?? true,
manualChunks: getManualChunks(config, onwarn, strictDeprecations),
moduleContext: getModuleContext(config, context),
onwarn,
perf: (config.perf as boolean | undefined) || false,
plugins: ensureArray(config.plugins) as Plugin[],
preserveEntrySignatures: getPreserveEntrySignatures(config, unsetOptions),
preserveModules: getPreserveModules(config, onwarn, strictDeprecations),
preserveSymlinks: (config.preserveSymlinks as boolean | undefined) || false,
shimMissingExports: (config.shimMissingExports as boolean | undefined) || false,
strictDeprecations,
treeshake: getTreeshake(config, onwarn, strictDeprecations)
};
warnUnknownOptions(
config,
[...Object.keys(options), 'watch'],
'input options',
options.onwarn,
/^(output)$/
);
return { options, unsetOptions };
}
const getOnwarn = (config: GenericConfigObject): WarningHandler => {
return config.onwarn
? warning => {
warning.toString = () => {
let str = '';
if (warning.plugin) str += `(${warning.plugin} plugin) `;
if (warning.loc)
str += `${relativeId(warning.loc.file!)} (${warning.loc.line}:${warning.loc.column}) `;
str += warning.message;
return str;
};
(config.onwarn as WarningHandlerWithDefault)(warning, defaultOnWarn);
}
: defaultOnWarn;
};
const getAcorn = (config: GenericConfigObject): acorn.Options => ({
allowAwaitOutsideFunction: true,
ecmaVersion: 'latest',
preserveParens: false,
sourceType: 'module',
...(config.acorn as Object)
});
const getAcornInjectPlugins = (config: GenericConfigObject): Function[] => [
injectClassFields,
injectPrivateMethods,
injectStaticClassFeatures,
...(ensureArray(config.acornInjectPlugins) as any)
];
const getCache = (config: GenericConfigObject): false | undefined | RollupCache => {
return (config.cache as RollupBuild)?.cache || (config.cache as false | undefined | RollupCache);
};
const getIdMatcher = <T extends Array<any>>(
option:
| undefined
| boolean
| string
| RegExp
| (string | RegExp)[]
| ((id: string, ...args: T) => boolean | null | undefined)
): ((id: string, ...args: T) => boolean) => {
if (option === true) {
return () => true;
}
if (typeof option === 'function') {
return (id, ...args) => (!id.startsWith('\0') && option(id, ...args)) || false;
}
if (option) {
const ids = new Set<string>();
const matchers: RegExp[] = [];
for (const value of ensureArray(option)) {
if (value instanceof RegExp) {
matchers.push(value);
} else {
ids.add(value);
}
}
return (id: string, ..._args: T) => ids.has(id) || matchers.some(matcher => matcher.test(id));
}
return () => false;
};
const getInlineDynamicImports = (
config: GenericConfigObject,
warn: WarningHandler,
strictDeprecations: boolean
): boolean | undefined => {
const configInlineDynamicImports = config.inlineDynamicImports as boolean | undefined;
if (configInlineDynamicImports) {
warnDeprecationWithOptions(
'The "inlineDynamicImports" option is deprecated. Use the "output.inlineDynamicImports" option instead.',
false,
warn,
strictDeprecations
);
}
return configInlineDynamicImports;
};
const getInput = (config: GenericConfigObject): string[] | { [entryAlias: string]: string } => {
const configInput = config.input as InputOption | undefined;
return configInput == null ? [] : typeof configInput === 'string' ? [configInput] : configInput;
};
const getManualChunks = (
config: GenericConfigObject,
warn: WarningHandler,
strictDeprecations: boolean
): ManualChunksOption | undefined => {
const configManualChunks = config.manualChunks as ManualChunksOption | undefined;
if (configManualChunks) {
warnDeprecationWithOptions(
'The "manualChunks" option is deprecated. Use the "output.manualChunks" option instead.',
false,
warn,
strictDeprecations
);
}
return configManualChunks;
};
const getModuleContext = (
config: GenericConfigObject,
context: string
): ((id: string) => string) => {
const configModuleContext = config.moduleContext as
| ((id: string) => string | null | undefined)
| { [id: string]: string }
| undefined;
if (typeof configModuleContext === 'function') {
return id => configModuleContext(id) ?? context;
}
if (configModuleContext) {
const contextByModuleId = Object.create(null);
for (const key of Object.keys(configModuleContext)) {
contextByModuleId[resolve(key)] = configModuleContext[key];
}
return id => contextByModuleId[id] || context;
}
return () => context;
};
const getPreserveEntrySignatures = (
config: GenericConfigObject,
unsetOptions: Set<string>
): PreserveEntrySignaturesOption => {
const configPreserveEntrySignatures = config.preserveEntrySignatures as
| PreserveEntrySignaturesOption
| undefined;
if (configPreserveEntrySignatures == null) {
unsetOptions.add('preserveEntrySignatures');
}
return configPreserveEntrySignatures ?? 'strict';
};
const getPreserveModules = (
config: GenericConfigObject,
warn: WarningHandler,
strictDeprecations: boolean
): boolean | undefined => {
const configPreserveModules = config.preserveModules as boolean | undefined;
if (configPreserveModules) {
warnDeprecationWithOptions(
'The "preserveModules" option is deprecated. Use the "output.preserveModules" option instead.',
false,
warn,
strictDeprecations
);
}
return configPreserveModules;
};
const getTreeshake = (
config: GenericConfigObject,
warn: WarningHandler,
strictDeprecations: boolean
):
| false
| {
annotations: boolean;
moduleSideEffects: HasModuleSideEffects;
propertyReadSideEffects: boolean | 'always';
tryCatchDeoptimization: boolean;
unknownGlobalSideEffects: boolean;
} => {
const configTreeshake = config.treeshake as boolean | TreeshakingOptions;
if (configTreeshake === false) {
return false;
}
if (configTreeshake && configTreeshake !== true) {
if (typeof configTreeshake.pureExternalModules !== 'undefined') {
warnDeprecationWithOptions(
`The "treeshake.pureExternalModules" option is deprecated. The "treeshake.moduleSideEffects" option should be used instead. "treeshake.pureExternalModules: true" is equivalent to "treeshake.moduleSideEffects: 'no-external'"`,
true,
warn,
strictDeprecations
);
}
return {
annotations: configTreeshake.annotations !== false,
moduleSideEffects: getHasModuleSideEffects(
configTreeshake.moduleSideEffects,
configTreeshake.pureExternalModules,
warn
),
propertyReadSideEffects:
(configTreeshake.propertyReadSideEffects === 'always' && 'always') ||
configTreeshake.propertyReadSideEffects !== false,
tryCatchDeoptimization: configTreeshake.tryCatchDeoptimization !== false,
unknownGlobalSideEffects: configTreeshake.unknownGlobalSideEffects !== false
};
}
return {
annotations: true,
moduleSideEffects: () => true,
propertyReadSideEffects: true,
tryCatchDeoptimization: true,
unknownGlobalSideEffects: true
};
};
const getHasModuleSideEffects = (
moduleSideEffectsOption: ModuleSideEffectsOption | undefined,
pureExternalModules: PureModulesOption | undefined,
warn: WarningHandler
): HasModuleSideEffects => {
if (typeof moduleSideEffectsOption === 'boolean') {
return () => moduleSideEffectsOption;
}
if (moduleSideEffectsOption === 'no-external') {
return (_id, external) => !external;
}
if (typeof moduleSideEffectsOption === 'function') {
return (id, external) =>
!id.startsWith('\0') ? moduleSideEffectsOption(id, external) !== false : true;
}
if (Array.isArray(moduleSideEffectsOption)) {
const ids = new Set(moduleSideEffectsOption);
return id => ids.has(id);
}
if (moduleSideEffectsOption) {
warn(
errInvalidOption(
'treeshake.moduleSideEffects',
'please use one of false, "no-external", a function or an array'
)
);
}
const isPureExternalModule = getIdMatcher(pureExternalModules);
return (id, external) => !(external && isPureExternalModule(id));
};