Const tauModule
tauModule: Module = new pl.type.Module(`constraints`, {[`project_workspaces_by_descriptor/3`]: (thread, point, atom) => {const [descriptorIdent, descriptorRange, workspaceCwd] = atom.args;if (!isAtom(descriptorIdent) || !isAtom(descriptorRange)) {thread.throw_error(pl.error.instantiation(atom.indicator));return;}const ident = structUtils.parseIdent(descriptorIdent.id);const descriptor = structUtils.makeDescriptor(ident, descriptorRange.id);const project = getProject(thread);const workspace = project.tryWorkspaceByDescriptor(descriptor);if (isVariable(workspaceCwd)) {if (workspace !== null) {prependGoals(thread, point, [new pl.type.Term(`=`, [workspaceCwd,new pl.type.Term(String(workspace.relativeCwd)),])]);}}if (isAtom(workspaceCwd)) {if (workspace !== null && workspace.relativeCwd === workspaceCwd.id) {thread.success(point);}}},[`workspace_field/3`]: (thread, point, atom) => {const [workspaceCwd, fieldName, fieldValue] = atom.args;if (!isAtom(workspaceCwd) || !isAtom(fieldName)) {thread.throw_error(pl.error.instantiation(atom.indicator));return;}const project = getProject(thread);const workspace = project.tryWorkspaceByCwd(workspaceCwd.id as PortablePath);// Workspace not found => this predicate can never match// We might want to throw here? We can be pretty sure the user did// something wrong at this pointif (workspace == null)return;const value = getPath(workspace.manifest.raw!, fieldName.id);// Field is not present => this predicate can never matchif (typeof value === `undefined`)return;prependGoals(thread, point, [new pl.type.Term(`=`, [fieldValue,// TODO: Investigate whether we should JSON.stringify primitive values too.// For now we don't because it would be a breaking change.// https://github.com/yarnpkg/berry/issues/3584new pl.type.Term(typeof value === `object` ? JSON.stringify(value) : value),])]);},[`workspace_field_test/3`]: (thread, point, atom) => {const [workspaceCwd, fieldName, checkCode] = atom.args;thread.prepend([new pl.type.State(point.goal.replace(new pl.type.Term(`workspace_field_test`, [workspaceCwd,fieldName,checkCode,new pl.type.Term(`[]`, []),])),point.substitution,point,)]);},[`workspace_field_test/4`]: (thread, point, atom) => {const [workspaceCwd, fieldName, checkCode, checkArgv] = atom.args;if (!isAtom(workspaceCwd) || !isAtom(fieldName) || !isAtom(checkCode) || !isInstantiatedList(checkArgv)) {thread.throw_error(pl.error.instantiation(atom.indicator));return;}const project = getProject(thread);const workspace = project.tryWorkspaceByCwd(workspaceCwd.id as PortablePath);// Workspace not found => this predicate can never match// We might want to throw here? We can be pretty sure the user did// something wrong at this pointif (workspace == null)return;const value = getPath(workspace.manifest.raw!, fieldName.id);// Field is not present => this predicate can never matchif (typeof value === `undefined`)return;// Inject the variables into a sandboxconst vars: {[key: string]: any} = {$$: value};for (const [index, value] of (checkArgv.toJavaScript() as Array<string>).entries())vars[`$${index}`] = value;const result = vm.runInNewContext(checkCode.id, vars);if (result) {thread.success(point);}},}, [`project_workspaces_by_descriptor/3`,`workspace_field/3`,`workspace_field_test/3`,`workspace_field_test/4`,])
@yarnpkg/plugin-constraintsThis plugin adds support for constraints to Yarn.
Install
This plugin is included by default starting from Yarn 4.